whats going on?

I was in such a wonderful mood lately. Nothing would bother me nothing would stress me out and now I feel like everything is just crashing down on me. NOTHING will go how it is planned. nothing is working out the way it should. I just feel miserable. I feel like giving up on life right now. I just feel like its not worth trying anymore. I dont want to take this summer class. I dont wnat to work anymore. I dont wnat to go to school. All I want to do is just do nothing. absolutely nothing. I dont know what to do with myself. I am in a rut and cant get myself out. Something is wrong but I dont know what. 

Everything in my life is going perfect! my friends are home, im playing soccer, im doing really good in school. I was so happy this morning like nothing could stop me. then one thing went wrong and now I dont know what to do with myself.  help