I used to be 'addicted' (No, I don't really think it's an addiction), I know what it feels like. It makes you feel 'exhausted', it got to a point where I'd think 'Should I study or should I just pleasure myself?'. On some days I'd wake up so tired that I'd skip school, if it gets to that point, then I think you need to do something. I told myself that every time I'd have sexual thoughts, I'd just go do something, like developing my hobbies and interests or meeting someone. and it worked for me.

Having said all that, I don't think it's wrong to do it every now and then.