What can I do when life is so hard?

I'm forced to move out from my comfortable big home with my mom to a filthy small apartment, my girlfriend broke up with me after my 2 yrs of unconditional love to her. Now I can't even afford to raise my poor dog and i have to sell her...I've never done anything wrong in my life, I always tried my best to help others whos living a life worse than mine. I always had faith in God but why is my life getting worse nd worse? What did i do wrong? Please someone tell me what can I do when life's THIS harsh...