Dear service user, Thanks for contacting Healthcaremagic. I have gone through your question and understand your concerns regarding insufficient erections and loosing established erection during coital act. Your problems seems to be psychological rather than physical illness. This can be overcome with psycho sexual therapy of both partners by trained psychiatrist. Sensate focus technique with medications proven treatment. There are effective medicines like Sildenafil or Tadalafil which significantly improves erectile dysfunction but, they should be taken only under medical supervision. I hope this will help you. Wish you good health.