No matter who you are or what art form you're in you're going to deal with disappointment. Somebody is not going to like you or what you do. Somebody is going to turn a cold shoulder to you or ignore you or worse perhaps,...well there is no worse than being pushed aside for any reason. If you haven't run into that yet you may be doing it wrong. ;) So relax.
Disasters are education, failures are all part of honest training. Unfairness happens. It's a numbers game.
OK enough with the clichés but you get the point don't you?