Dear user, Thank you for writing to Healthcaremagic. I read your concerns. I could help you in better way if you would have mentioned your age and duration of problem. The commonest reason of insufficient erection or inability to achieve/enjoy climax is psychological performance anxiety. An occasional episode of erectile failure due to functional or situational reasons like fatigue, tension or own pressure to perform rather to enjoy is very common. This diminishes arousal level and hence erection too. This failure of erection makes one feel I should perform best and he tries to erect’. This in turn further leads to loosening of erection. For constant erection, continuous exciting/romantic/erotic feelings should be there in mind. If the mind is diverted to concern about erection or ejaculation during sex or masturbation, one will lose erection. You do it properly while masturbation proves that you do not have any physical illness. That is good. Penis size has no effect on sexual satisfaction of the either partner. ‘’Bigger is better’’ is very rampant myth shown in pornography. Don t let myth ruin your sex life. I suggest having a talk with your psychiatrist or sex therapist. Wish you good health.