You gotta go further then any one of them that's the trick, someone calls you ugly, you say the nastiest stuff you can think of about them, someone laughs at you, you threaten them or stare them down, of course you need some bulk behind you or you'll get your ass whopped which is why going to the gym is a good source of motivation.

People learn fast if you can or can't take shit and if you can't wherever you live, work or do your day to day business will gradually become your personal hell rather then a place where you can earn your keep in peace, never ignore it, never back down and give back thrice as bad or they'll go further and further everyday.