Why?

Why do I feel pain? Why do I feel as if there's something missing in my life? I only want one answer on why do these thang have to happen to me why do I pain why do I feel sad but yet mad? What did I do to the world that it treats me like this? I want to be happy for ounce. Not mad not sad but happiness. I feel like the pain is eating at my soul. I wish it would go away an never come back ever agin. Can someone tell me what to do! Who is causing me this pain in side? Why must it be there?WHY MUST YOU BE THERE PAIN!!