Avoid masturbation.          Masturbation is done by almost every body during adolescent age  and even afterwards.. It is not harmful if done in moderation.Both men an women can enjoy the sexual release it provides. But if you do in excess then it can lead to lots of problems. Do not see porn. Avoid masturbation. Avoid remaining alone. Do yoga. .Excessive masturbation can lead to damage of nerves supplying the penis which in future may lead to shrinkage of organ, low sexual stamina, early discharge (premature ejaculation) etc. . It should not interfere in your daily life. Detailed medical history has to be taken before providing you treatment.