1. Lead with your fork. (Show people what is awesome about being vegan.)
2. Don't be a dick. (Stolen from Wil Wheaton.)
…I didn’t die from malnutrition.
…I felt about a million times better about myself.
…I didn’t eat a single fucking salad.
…I didn’t tell a single meat eater they should die.
…a cow showed up on my doorstep to thank me personally.
…my mother tried to get me committed for having an eating disorder.
…I didn’t lose a single pound, but I still felt awesome.
…after six months the thought of eating real cheese was disturbing.
…I got super powers. 
…THIS GUY NAMED BARNEY ATE ALL THE VEGAN SPRING ROLLS!!!
