The ONLY negative effect of masturbating that frequently is a possibility of a friction burn, you can avoid that by using a very small amount of lube just under the head or wherever you rub the hardest. Psychologically its a different problem. The only negative effects are (a) if you feel badly about it, then your self-image may suffer (solution is to accept it, don't feel bad about it, in fact almost EVERY boy masturbates regularly) and (b) if you spend too much time fantasizing about sex, then you may opt out of the challenges and difficulties associated with real interpersonal relationships (solution is to try and masturbate less with fantasy and more with the pure physical enjoyment of the act, after all people don't fantasize when they have sex either.). The short answer is that masturbating everyday is not at all bad for you, if you do it right. On the other hand, not masturbating at all, won't hurt you either. Any "excess" will be lost through nocturnal emissions (wet dreams).