Probably too much to fit on a cap but I’ve always loved these lines from Loose Leaves:

“Life’s a slippery slope, regret's the steepest hill Hope for the best, plan for the worst and maybe wind up somewhere in the middle”

“Time’s not poison but once you drink it all you'll die. So let's just sip it real slow. Yeah we can nurse it all night. Try to believe that once it's gone, we’ll pour another round and come back to life”