One of my favorite songs is “Smile,” especially the version by Madeleine Peyroux. It always lifts my mood. When listening to the music and lyrics it’s almost impossible not to smile — which is the whole point.
Smiling is one of the simplest little tools we have for shifting our state. No supplements. No training. No meditation cushion. Just… smile.
The Science Behind “Fake It Till You Make It”
It’s the classic “fake it till you make it” move, but it turns out there’s actually some science behind it.
Your facial muscles send signals back to your brain. Psychologists call this the facial feedback effect. When you activate the muscles used in smiling, your brain receives feedback that says something like: things must be going okay. That feedback loop can nudge your mood in a positive direction — not dramatically, not instantly every time, but noticeably.
Smiling is also associated with increases in a few helpful brain chemicals: dopamine, serotonin, and endorphins. These are all tied to feelings of well-being and reduced stress. So even if the smile starts out intentional, the body still responds.
I Literally Practice Smiling
I notice this in myself. Sometimes I’ll catch my brow tightening or my mind spinning on something — money, work, some imaginary future problem. When I notice it, I’ll just pause and smile.
It sounds a little silly, but it works. The shift is subtle. It doesn’t magically solve whatever I was worrying about, but it does soften the internal tone. My shoulders relax a little. My thinking slows down. The system resets slightly.
I suspect it’s good exercise for my face muscles too.
Smiling at Strangers
The other place I try to practice this is out in the world. If I’m walking into a store, passing someone on the sidewalk, or interacting with a person behind a counter, I try to make eye contact and smile. Not a big theatrical grin — just a relaxed, genuine smile.
Something interesting happens when you do this. People usually smile back.
Humans are wired to mirror each other’s expressions. When someone sees a smile, their brain often nudges them to return it automatically. It’s part of how we signal safety and friendliness to one another. So a small smile doesn’t just shift your own state — it can change the emotional tone of a tiny moment between two people and ripple outward.
A Small Signal With Real Effects
None of this is complicated. You don’t need to wait until you feel happy to smile. Sometimes smiling is what helps create the happiness.
A small signal to your nervous system. A small signal to the people around you. Everything’s okay. We’re safe here. Life is good enough in this moment.
If you enjoyed this post, check out my free interactive nervous system regulation guide for more tools like this. Also check out my podcast Mark Cool – Outside the Box Life on Spotify, Apple Podcasts, and YouTube.