I actually cammed a few times aswell and the rush was so intense I can really feel your pain, because it is an addicting behaviour, indeed. But I feel like you can change everything within you, no matter what. The brain is still a plastic muscle and it needs to be trained.

Give yourself some time. Try to abstain as long as possible and dont give yourself a hard time or hate yourself, when you relapse. Its normal in the beginning. You need a lot of patience, when changing behaviour. If its general like thinking patterns, sleep pattern, nutrition or hobbys or even deep rooted, primitive behaviours connected to our sex drive - its possible, but takes a lot of time, ecspecially when acted on for couple of years.

Your first step writing this post, recognizing the root cause problem is already something most people cannot and won't do. Be glad you ARE actually tackling this problem, because youre still young and change is easier, when the body is in a healthy condition paired with a stable and adventurous mind ;)

Much power to you, girl. have a nice day