Those little comments can really be amazing for your short-term mental health. The other day some random person stopped at a red light on their scooter complimented my hair as I rode through the crosswalk.
My hair goes halfway down my ass. I've grown it for years and it means a lot to me. I mostly just wash and condition it and keep it brushed, and put it up for work. Nothing fancy. So it could use some extra care. Lately I've started using a bonding shampoo and conditioner to help repair the ends and occasionally some grape seed oil. So them complimenting it specifically when I'd been putting a little extra effort in absolutely made my day. I was smiling for the rest of the ride home. And I'd really needed a boost as my mental health has been record low lately.
I try to remember this as I go about my life, and give people little compliments when appropriate, in hopes that maybe they needed it, too.