Dear Sir, I have a problem regarding sexual encounter. I started to masturbate at the age of 14 and now I am 26. During this 12 years I used to masturbate almost everyday. Now my problem is the duration of intimacy. It does not last long or I cannot stay longer period of time. My penis only stays harder for 1-2 minutes. So my fiance is not happy with me. How can I make my conjugal life happier?