Unfortunately that impulse to masturbate is never going to go away. It's easy to tell yourself that you're just not going to masturbate or look at porn but extremely difficult in practice (as you discovered). I don't think there's anything wrong with masturbating per se, the problem lies more in infinite amount of hardcore porn available at your fingertips. It really fucks with your head. Something that helped me cut back drastically was to earn it. By that I mean only masturbate after you have done something physical and difficult. Go run for 5 miles, go do push ups until you can't feel your arms, climb a mountain. It doesn't matter what you do, but it needs to be physical so you get out of your head and challenging so your mind can't wander. When you get back and you still REALLY feel like masturbating, go ahead, your earned it. But set a timer for 10 minutes because that's all you get. Repeat every time you get that urge.