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You're listening to TED Talks Daily, where we bring you new ideas to spark your curiosity every day. I'm your host, Elise Hu. When Christina Costa was a middle school science teacher, she had a little ritual with her students. At the end of a good stretch of work, she would ask them to kiss their brain, tap their fingers to their lips, then tap the top of their heads, a small, silly gesture of gratitude. Years later, she'd left teaching to get her PhD in psychology, and that phrase would mean more to her than she could have ever imagined.
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I have never been more scared in my life than I was that night. And with tears dripping down my face in the hospital, I kissed my brain for the first time since I had left my middle school classroom.
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Christina, who is now a psychologist, studies resilience and well being. And not long ago, she was diagnosed with a brain tumor. In her talk from 2021, she shares that almost immediately after her diagnosis, she noticed the language everyone reached for, that she was strong, that she would be ready, fight. And the more she heard it, the less it fit.
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Fighter I look at myself in the mirror. It felt okay at first, but soon it became exhausting. Too heavy to lift, too much to carry, too burdensome to bear. I took it off and left it on the floor. War was not for me. A body is not a battlefield.
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Instead, she offers a different way through a frightening diagnosis, one rooted not in battling but in gratitude. She walks through what the science actually says about that choice and how a practice as small as kissing your brain might reshape the way we face the hardest things. That's coming up right after a short break. And now our TED TALK of the day.
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When I was a middle school science teacher, I would often ask my students to kiss their brain. I got this idea from visiting my friend's kindergarten classroom. She would ask her students to kiss their brain and they would take their fingers, tap them to their mouth and then to the top of their head. And it truly was as cute as you can picture it to be. So I decided to bring it back to my middle school classroom, which could have gone one of two ways. But it ended up being a really fun ritual for us too. And I would ask them to kiss their brain for all the work they did in class as a practice of gratitude. After teaching middle school, I came back to grad school to get my Ph.D. in psychology. My research is within the area of positive psychology, which is a science that investigates the strengths and factors that allow individuals and communities to thrive. I also get to teach psychology to Undergrad students and high school students. I love teaching psych, and my absolute favorite unit to teach in intro psych is the brain. But while I love teaching about the brain, I thought it would be pushing it to ask my undergrads, AKA undergrad adults, to kiss their brains. So three years would go by before I would remember that fun phrase. One day after teaching last year, I had a terrible migraine that left half of my face numb and blurred my vision. The migraines kept happening, I saw multiple doctors, and then I started experiencing dizzy spells. The neurologist ordered an mri and I remember being so excited because then I would be able to use my own brain pictures when I taught brain imaging to my students. But as it turns out, my MRI wasn't too picture perfect. The doctor called me and asked me to go to the ER because there was a large mass in the right hemisphere of my brain. I have never been more scared in my life than I was that night. And with tears dripping down my face in the hospital, I kissed my brain for the first time since I had left my middle school classroom. I made it my mantra. And I kissed my brain every single day leading up to and after surgery. Then two weeks later after surgery, the pathology reports came back and I was diagnosed with an anaplastic astrocytoma. The weeks following were very difficult. I tried to figure out what I was struggling with the most by looking back on all the things I had been writing about this experience. I wrote and posted this on Instagram about a week after I received that pathology report. I will keep fighting. I will keep loving. I will keep living. I will keep loving. I will keep living. And then about a week after that, I wrote Fighter. I tried it on to see how it felt because I kept hearing those words next to my name. Like a job, like an identity, like a role. Fighter. I look at myself in the mirror. It felt okay at first, but soon it became exhausting. Too heavy to lift, too much to carry, too burdensome to bear. I took it off and left it on the floor. War was not for me. A body is not a battlefield. I realized that I had been introduced to the fight narrative when people heard my diagnosis. I became a fighter. You're a fighter. Keep fighting. Beat this tumor were the top comments. And then there was the Internet, the place I so desperately search for people who are doing well with their diagnosis. But the top half the hashtags to search for were Brain tumorsuck, Cancer Sucks, and Cancer Fighter. I understand completely why those hashtags exist, but I was so eager to find the hashtag hi, I have a brain tumor that might never go away and I'm still living and thriving, and I guess there just isn't a ring to that one. I hated the idea that I was going to be at war with my brain because I had spent months and years kissing it. Instead. I hated the suggestion of naming my tumor something awful because the reality is that it was going to be my neighbor for the rest of my life. And I hated the guided imagery training that asked me to picture chemo as an army coming to battle the cancer cells because I didn't want to spend over a year of my life at war with my own body. I can see how these elements of the fight narrative can be empowering for people, but for me, I knew it wasn't going to work. So I started to reference well being practices that I had learned from my own studies. Doctors always laugh with me when they find out that I'm a biopsych and neuroscience major and psych PhD student. Then when they ask what I'm studying and I tell them I study resilience and well being, they either laugh again, say something like oh, that's irrelevant or go aww. The irony was never lost on me. I have read so many stories and studies of resilience, but I never pictured the day that I would have to personally experience it. I read and taught about gratitude practices specifically as a well being strategy, and even though I knew the positive effects, I had never seriously practiced them myself. I started to incorporate some of these exercises into my life. I tried to stop focusing on what my body had done wrong and focus on the gratitude I had for my body instead. And really, I realized this is something I had been doing when I was kissing my brains those days when I was leading up to and after surgery, gratitude became the tool that helped me restructure my vision of illness and disability when the world was telling me I should fight it instead, instead of thinking about if I would be able to have kids one day, I thought of how amazing it was that my brain, despite its trauma, was able to deliver the perfect amount of hormones to my body to produce enough eggs to save for a later date. Every time I went to radiation and was put in my mask, I kissed my brain and I focused on the resident telling me how the healthy cells would be able to repair over time and the cancer cells could not. And when the operative notes came back for my surgery, a day that I remember very well and had been scared to think about, I read the note out loud Sobbing, happy and grateful tears, thinking about what my neurosurgeon's team did, I started to feel such an immense sense of gratitude for science, medicine, and my medical team that those thoughts started to drown out the what is my life going to be like Thoughts. The more I practiced gratitude, the more peace I felt with my situation. And this got me interested in what could be happening with the science of gratitude. At a neurological level, there are several positive psychological and social outcomes of gratitude, like increases in happiness, decreases in depression, having stronger relationships, and experiencing positive emotion. And FMRI studies show us that several parts of our brain and pathways are activated when we experience and express gratitude. One of these parts is the medial prefrontal cortex, an area associated with the management of negative emotions. Together, these changes in neurotransmitters and hormones, combined with the activated neural pathways, help us cognitively restructure potentially harmful thoughts to better manage our circumstances. And the cool thing is that we can intentionally activate these gratitude circuits in our brain. In general, the more we do something, the easier it becomes, and our brains work the same way. The more we activate these gratitude circuits, the less effort it takes to stimulate those pathways the next time, and the stronger those pathways become. Neuroplasticity is a term I teach my students that refers to our brain's ability to form new neural connections throughout life, which means this is something that anyone can practice and get better at over time. So I kept practicing gratitude even when it seemed impossible. I continue to thank my brain for the amazing work it does. As I prepare for 12 more rounds of chemo this year, I write down three things I'm grateful for and why I'm grateful for them no matter what. Every morning that I wake up, I write thank you notes to my heroes in healthcare. Nurses who get the IV in the first time, the anesthesiology resident who held my hand during the awake portions of my surgery, radiation therapists that play my playlist during treatment, and administrative staff that makes me smile every time I walk into the hospital. I do want to take a second here and practice what I teach to shout out my doctors and their teams from the Michigan Medicine Multidisciplinary Brain Tumor Clinic. I have never met such intelligent, kind and patient people. Thank you for making me feel brave when I sometimes felt the opposite. I think the universe might think it's funny that a psych instructor and researcher who studies well being ended up with a brain tumor. The truth is that we need more awareness and more research regarding brain tumors and brain cancer. Doctors can't exactly predict how my tumor will behave. And really, none of us can predict what our lives are going to be like exactly. But what I hope I can show you is that we can also be grateful for the unexpected challenges. I don't want to dismiss people who may find the fight narrative empowering. I also don't want to suggest that it is by any means easy to find ways to be grateful in dealing with adversity. This has been the hardest thing that I've ever had to do. But I do want to empower those that feel like me that there's another way to go through whatever your journey may be, that loving your body doesn't have to be conditional, and that by practicing gratitude, we can actually wire our brains to help us build resilience. And lastly, I hope everyone, no matter where you are or what you are doing, can take a second to kiss your own brain and thank it for all that it does for you.
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That was Christina Costa at TEDx U of M in Ann Arbor, Michigan in 2021. This talk was originally published in December of that year. If you're curious about Ted's curation, visit ted.com curationguidelines and that's it for today. TED Talks Daily is a podcast from ted. This episode was fact checked by the TED Research team and produced and edited by our team, Martha Estefanos, Oliver Friedman, Lucy Little, Emma Tobner, and Tonsika Songarnival. Additional support from Daniela Balarazo, Christopher Faizi, Bogan, Valentina Bohanini, Banban Chang, Brian Greene, and Lainey Lott. Learn more@podcasts.ted.com I am Elise Hu. I'll be back tomorrow with a fresh idea for your feed. Thanks for listening.
Date: August 6, 2026
Speaker: Christina Costa
Location: TEDx U of M, Ann Arbor (2021)
Host Introduction: Elise Hu
This episode features psychologist Christina Costa, who shares her personal journey after being diagnosed with a brain tumor. Costa explains how she shifted from viewing her illness as a battle to embracing gratitude as a tool for resilience and healing. Drawing on her expertise in positive psychology and her lived experience, she unpacks both the science and the transformative power of everyday gratitude practices—even amid life’s greatest challenges.
Years after leaving teaching to pursue a PhD in psychology, Costa began experiencing severe migraines and neurological symptoms, which led to the discovery of a brain tumor (an anaplastic astrocytoma) (03:26).
In her hospital bed, overwhelmed by fear, she revived the "kiss your brain" ritual as a mantra to thank her brain each day before and after surgery.
“I have never been more scared in my life than I was that night. And with tears dripping down my face in the hospital, I kissed my brain for the first time since I had left my middle school classroom.”
—Christina Costa (00:34)
Post-diagnosis, Costa noticed the prevalent "fight" language—expectations to “battle” cancer and adopt the identity of a “fighter.”
She found the metaphor of war with one’s own body emotionally exhausting and counterproductive, preferring acceptance and gratitude.
“War was not for me. A body is not a battlefield.”
—Christina Costa (01:07)
“I hated the idea that I was going to be at war with my brain because I had spent months and years kissing it, instead.”
—Christina Costa (05:37)
While some may find the fight narrative empowering, Costa advocates for alternative ways to frame illness, rooted in compassion for one’s self.
Drawing on her scientific background, Costa explains the research behind resilience and gratitude’s positive psychological benefits (07:00).
Despite teaching gratitude in her professional life, this crisis marked her first serious commitment to daily practices—shifting focus to what her body could do, rather than what it couldn't.
"I tried to stop focusing on what my body had done wrong and focus on the gratitude I had for my body instead."
—Christina Costa (06:58)
She shares specific examples:
Costa emphasizes that gratitude does not deny the difficulty of adversity but offers a practical tool for building resilience.
She encourages listeners to “love your body unconditionally,” reframing adversity as a chance for growth and acceptance.
“By practicing gratitude, we can actually wire our brains to help us build resilience.”
—Christina Costa (11:24)
She underscores that gratitude is not always easy—and acknowledges the weight of her own journey—but wants to empower others to choose compassion rather than conflict with themselves.
Costa closes by inviting everyone to appreciate their brain, wherever they are:
“I hope everyone, no matter where you are or what you are doing, can take a second to kiss your own brain and thank it for all that it does for you.”
—Christina Costa (11:46)
On letting go of the “fighter” identity:
“I took it off and left it on the floor. War was not for me. A body is not a battlefield.” (01:07)
On re-centering gratitude:
“Gratitude became the tool that helped me restructure my vision of illness and disability when the world was telling me I should fight it instead.” (07:18)
On the neurobiology of gratitude:
“At a neurological level, there are several positive psychological and social outcomes of gratitude, like increases in happiness, decreases in depression, having stronger relationships, and experiencing positive emotion. ... Neuroplasticity ... means this is something that anyone can practice and get better at over time.” (08:33–09:13)
Costa’s tone is simultaneously heartfelt, candid, and practical—sharing personal vulnerability while grounding her advice in scientific evidence. She balances encouragement for others with honest acknowledgment of difficulty, aiming to create space for new narratives around illness and healing.
Gratitude—even practiced in the smallest, silliest ways—has the power to reshape our minds, foster resilience, and offer a path through fear and uncertainty. “Kiss your brain” is both a literal and metaphorical invitation to honor our bodies with appreciation, especially when life is hardest.