I'm with cookie on this one...it's something you have to make a committment to, a promise to yourself, what ever you want to call it. Dealing with each and every trauma, and all of the other things that tend to hide behind the traumas (i.e. things that have hurt you before in life that haven't been dealt with-just stuffed down), being honest with yourself, having others be honest with you. It's not easy, it's not pretty, it will make your symptoms worse for a while...but it's worth it because you get to have your life back.
There's no cure, there's no magic pill...PTSD will be with you for life. It's a matter of learning to manage your symptoms AFTER you've dealt with your traumas. Otherwise, like you said, you're right back where you started.
I'm coming up on my one year anniversary of my symptoms going out of control (even though I've had PTSD most of my life and didn't know). It's been a hell of a year. But I know I'm healing-it's been hard, hard work. No matter how long it takes, I'll keep fighting because I want it that badly.