Hi, thank you for using health care magic. I can understand your concerns. As you reported maintenance of erection is a problem that means some psychological factor affecting your sexual activity. Many times isolated erectile problem get worse when person starts thinking about it too much. This will lead to performance anxiety and that further reduce the erection. So first remain assure that it is not a physical problem as you are able to get erection. Sensate focus training is basic method to reduce the erectile problem due to psychological issues. Along with it you should remain focused in intimacy rather then worry about performance in sex. Use new position, role play, fantasy during sexual activity. Consult psychiatrist for further help if needed. Regards.