If you think you won’t be able to maintain an erection, guess what. You won’t. If you think you will ejaculate prematurely, guess what. You will.
Hypnosis and Counselling for Sexual Issues can help get you out of your head, and back into allowing the body to do what is designed to do. The subconscious mind is a perfect servant. The more you think you have a problem the more it will manifest it as a problem. It has no discernment and your imagination is your creative faculty. What you imagine it will deliver. This can turn into a habit of thinking this way.
Sometimes you need to break that habit at a subconscious level and this can often be done through hypnotherapy and counselling.