It's only high school if you let it
"I'll show them!"
Creative people need fuel. Overcoming the resistance and quieting the lizard brain takes a lot of work. Often, we seek external forces to excite us, inspire us or push us to take the leap necessary to do something that might not work.
And so we read what the critics write, mistakenly believing that it will help improve the work.
Or we go to a conference and mentally start comparing ourselves to everyone. He seems to get more respect. He has a better speaking slot. They forgot to list me in the program. She didn't make eye contact. They must have known that I didn't want to talk about that. Someone at the reception didn't look closely at my favorite painting...
At the very same time you're persuading yourself that in the hierarchy of whatever-matters-to-you, you are close to last, all the people around you, each with his or her own hierarchy, has put you on the very top, on a pedestal, the person they seek to match or even surpass.
There are slights available wherever you look. Cool kids excluding you anywhere lunch is served, ever. You just have to look for it.