Hello ,i m 20 m, i ve been mastrubating excessively over 6 years of span , dis s causing so many problems with me like forgetting things , severe back pain, n i ve become so emotional even , a drastic change , i m morely attracted to guys also. oh god i m not able to control dis mastrubation .is tat sumthin has to do with the size of the penis and mastrubation (does it goes hand in hand) my hard size is 8cm .wat is d normal size??.. it s racking my head . plz help me out !!! :0(