Masturbation is a natural process when a person is getting sexually active and 80% of the boys start it to enjoy before the age of 14 and rest try it after age of 14. It is not harmful if it is done once or twice a month but excess of everything is bad. Nothing is going to happen if you do not masturbate for 90 days. Daily Masturbation is  harmful phenomenon as it weakens the Muscular Strength of Penis and induces Early Discharge at slight arousal. It can be controlled by taking Nerve  tonics like Ashwagandha Powder 1Tsf twice daily with Dhatupaushtik Churan I Tsf at night with Warm milk. Slow massage on the shaft of Penis with Shri Gopal Oil would also help. Detailed medical history is required for evaluation before giving you a good prescription. My website address http://kayakalpinternational.com