Hello Thanks for your query,based on the facts that you have posted it appears that you have problem of Premature Ejaculation . You have been indulged in masturbation since many years and atributethis problem to be due to masturbation , First of all there is myth in a mind of common man that excessive masturbation is the reason of all sexual problems But I would like to state that it has been discussed in scientific forums all over the world and proved scientifically that masturbation does not have any negative effect on any organ or system in the body.All the problems that you are facing now are mind related and due to anxiety. Following measure will help you to boost up your confidence and getting good erection.and delay ejaculation. 1) Practice regular exercise for 45 minutes followed by meditation for 1/2 an hour in the morning. 2) Take high protein diet rich in vegetables and fruits and Vitamin A,C,D,E.and Zinc 3)Take anti oxidants like Almonds 5-6 everyday.. 4) Avoid alcohol and smoking.. You can consult qualified sexologist along with your wife to learn new sex techniques like stop and start technique or squeeze technique to delay ejaculation. Dr.Patil.