Dear Welcome to HCM We understand your concerns I went through your details. Erectile dysfunction (ED), sometimes referred to as impotence, is the inability of a man to achieve or maintain an erection hard enough for sexual intercourse. Reason for ED could be physical or psychological. Many organic conditions such as diabetics, prostrate troubles, heart conditions can cause ED. You said your tests are OK. If it is satisfactory, the next reason could be psychological. Counseling and psychotherapy (talk therapy and CBT) are found effective for ED. Talk to a psychologist. Please understand masturbation in moderation is not harmful for your health. But in excess it is always harmful because it spends lot of energy. Physical activities like exercise and games, entertaining activities, education, career, interaction with friends and family help you abstain from the masturbation. Anxiety about masturbation is also unhealthy. You may consult a psychologist for further counseling and advise. If you require more of my help in this aspect, please use this URL. http://goo.gl/aYW2pR. Make sure that you include every minute details possible. Hope this answers your query. Available for further clarifications. Good luck. Take care.