Needs therapy <<<<?

Nothing is wrong with you, everyone gets stuck in their head for a while, at least I have. I'm sure you know some stress relievers already. But when those don't work, the hardest thing to do is always the best thing. Just drag yourself up and do something "normal" with friends or family or whatever (no matter how trivial and annoying it is). It will get your mind off of things until something great comes that you can use in your art. Honestly "pretending" that you're happy is a strong force. It may seem fake or wrong but give it a try. Good luck.