Replying to Progression vs fun

I was just wondering inputs on the subject: when does trying to progress interfere with having fun. People always stress how skiing is all about having fun, but they also argue how people that suck should not be in the park.

But when you are trying a new trick, the nerves get to you, causing you to stress and sometimes pussy out, not having fun. Other times you think about the trick too long and it gets in your head and once again you get stressed and are not having fun.

So my main question is, how do you have fun skiing and progressing without stress and nerves getting to you? Just wanted to hear your guys tips and comments