Life is too short to take it seriously. OR I use this one when shit starts to go bad: Laugh. It's either that or slit your wrists. I also use "God hates me" alot but that is more just when I am really pissed. BTW ya gotta know god is a chick... Just look at her fucked up sense of humor! lol
"Nothing is evil. Nothing is pure. Everything is impermanent." and I;m always caught saying... "Whatever is clever" or "You do you"
I've got a few: "Buy the ticket, take the ride." "Sleep late, drive fast, and don't take any of this shit seriously." and finally... "When life gives you lemons, just say 'Fuck the lemons' and bail."