Masturbation addiction. All. pls advice.

I'm a 26 years old. I first started masturbation at 9 years of age. I gradually got addicted to it. I do it around 20 times every single day. It is with porn 25% of times and by thinking about arousal stuff the other 75%. If I skip it for a day, then I can't think of anything other than masturbation for the whole day. I even occasionally get strong urge to eat my sperms and smell my hands after rubbing them with sperms. The duration between one ejaculation and the start of the next session can be as less as 5 minutes at times. I get strong erections, especially in the morning. I've never ever had nightfalls or wet dreams. I occasionally indulge in sex and that doesn't affect my frequency of masturbation at all. The maximum duration of abstinence has been 10 days from the time I first started. I know I'm damaging my body but my condition is like a smoker who can't stop inspite of knowing that it is harmful. Meditation /engaging my mind in anything else doesn't help at all. Pls advice.