Masturbation is a natural process when a person is getting sexually active and 80% of the girls start enjoying it 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. Watching porn movies and ending up in Masturbation is  harmful phenomenon as it weakens the Muscular Strength of our genitals and leads to unsatisfied sex. You can control this mindset by doing Pranayaam, Dhyan and Meditation when you feel an intense urge to masturbate. This is very helpful and it can entirely change your bad. Strong will power, physical exercise, emotional stability and proper diet are very important in achieving satisfaction. It can be achieved by taking Nerve  tonics like Ashwagandha Powder 1Tsf twice daily with Dhatupaushtik Churan I Tsf at night with Warm milk. Ashokarisht 2 Tsf after meals would also help. Detailed medical history is required for evaluation before giving you a good prescription. My website address http://kayakalpinternational.com