Why can't I ever find help!

Hey, I'm just starting to catch on that I'm a sex addict. I've been looking for help because I'm scared. I've put my marriage in a very unhealthy situation and it hurts. I want to change and be better but I cannot afford counseling or therapy from a professional and you cannot find someone to talk to about it at all. It's really frustrating because I don't want to mess up again, but trying to hold back my eurges is making me worse. I just need someone who has some idea and can help me find an escape. Why is their no one to help?

Maybe I'm just new to this. Does anyone know what I can do, or anyone I can talk to?