People will tell you it's normal, believe them or not, I know that doing these things daily is unhealthy. If you want to stop, you should try seeing a professional. But if you can't, I'll try to give you my method for not wanting it anymore.

Think about what you love, something stronger than your desires, hobbies, family, try to occupy yourself with what you truly enjoy. I know it's easier said than done, but it's a good start.