Yeah, this is usually caused not by people in the park, but people outside it.
It's people that don't know dick about park are the ones that are like "Why can't you do a backflip, what's wrong with you?". Or when you are trying your first 3's or something, it's never the dudes that are throwing the switch cork 9's that are hating, because they've all been there before. I mean your friends should push you to progress or warn you when you are out of line, but never ever put you down cause you can't do a trick. That's for people that don't know a fucking thing about the attitude of our sport.
So just chill, burn a bowl, and throw down with your buddies.