How do I stop obsessing over things? PEASE HELP thanks :)?

I have OCD, and I obsess over lots of irrational things. One of the things the annoys me the most is that I watch things over and over and listen to songs over and over. I over analyze things constantly. Like if I see a new music video I will re watch it at least 60 times in that day, maybe more. I don't count but I know I do it a lot. If I see a new movie I'll watch it about 80 times, analyzing little things that no one else seems to care about. I am constantly analyzing things. I also wash my hands a lot, I don't like when dirty things touch me, I also check every night more then once if my family's front door is closed, I also make lists, that I never use, I say god forgive me and stuff like that over and over if I feel I've disrespected god, or even if I mention something with god I say god forgive me. I also pray every night that I don't die in my sleep because I am extremely afraid of dying in my sleep. How do i stop giving into my compulsions?