I agree with everything Cat said.

You aren't likely to find a "cure" for your thoughts on this side of eternity. But you can figure out how to manage them and live a happy life. To use the medical paradigm: Pedophilia is more like diabetes than like cancer; in other words, you don't attack it aggressively in the hopes of making it go away for ever, you learn to manage it so that you can live a full productive life even though you have that condition. You learn what things you can and can't eat, which behaviors should be avoided and which should be encouraged. You learn to live a full and happy life in spite of your condition.

Now, not all of us see pedophilia as a medical condition, I know I don't, but since you used that term, I figured I'd keep to that terminology.

I think the first and most important step is to figure out what place that has in your thought life. There's a big difference between someone who is an otherwise normal functioning heterosexual who also has a weird sexual fantasy about little girls and someone who is primarily or exclusively attracted to young girls.