25 Teeny Tiny Ways To Be 40% Happier

Jump on the kefir bandwagon

Or, really, anything with probiotic bacteria, since several different studies prove “live and active cultures” seriously mellow you out. All that good bacteria may be sending chill vibes from your gut to your brain through the vagus nerve, while altering neurotransmitters that signal a “simmer down” effect. (Keep eating your way happy with these 9 other edible mood boosters.)

Get in on the flax frenzy

Flax contains alpha-linolenic acid, a key ingredient that made nurses with the highest levels less likely to be depressed, in one study. Can’t find flax? Walnuts will do the trick, too.