I try to make it a point to smile a lot and I think everyone should. Not in a “You’d be handsomer/ prettier if you smiled” type of way. Smiling just makes me feel good; it’s free and it’s a really easy way to spread a little joy around, which I think we all could use a little more of. Obviously there are situations and circumstances when smiling may be not a great idea or perhaps be inappropriate, but I think only good things can come from being bit more (responsibly) liberal with our smiling capabilities, even if that means just smiling to ourselves every now and then.
BONUS: Here’s a TED Talk about smiling