Hello, I really appreciate your concern. Excessive masturbation leads pain around penis. Sexual arousal is common in your age but it should be controlled. In excess, it can lead to loss of interest in daily routine activities and some mental and physical stress. You can engage yourself in exercise and acquire other hobbies during your leisure time. Try to find a company or a good friend in your daily life. Have healthy diet containing high fibers like fresh fruits and vegetables. Avoid oily and spicy food. Avoid fast foods like pizzas. Learn to enjoy your life in other ways. Take care. Thank you.