I must reiterate how much psychological work I had to do to remove POIS: It wasn't like I told myself
"sex is okay", "masturbation is ok" and things magically cured themselves.
I had to talk to myself. I had to sense that deep down I always thought I did something wrong. I had to concentrate on how much I hated myself because of my lack of control. And still, after some time I would try again to check if there were any improvements.
I had to discover what POIS state told me - You will ruin yourself, you'll get laughed at, you'll be unproductive etc.
I was so stressed that it basically felt like some kind of bad drug - a dizzy state, being very very anxious etc.
The book that most helped me was Gestalt Therapy Verbatim by Perls but I think modern Psychotherapy has better tools.
I don't care you guys believe me or not. I had tried so many so-called cures in the past and they had similar effects that were described here: Garlic, Apple Vinegar, Antihistamines, Gargling, Diet, and Antibiotics. Everything helped me a little bit but for their reasons, I will explain later (Tips: Psychosomatic stress on guts)
I understand that some POIS might have different cause but I truly believe that had similar cause as some of you and so you must listen