Hello Doctor, I am 31 years, male from india, my problem is i started masturbating from the age of 12, and i still continue it, i masturbate 2-3 times a day on a regular basis. My problem is when i am with my girlfriend i don't get proper erection and so i cant have sex with her. I want to ask you whether this is happening due to my over masturbation. Please suggest me what to do