The way I view sex and the people I date are very very different then the people I did stuff with when I was much younger. When I was a teenager, I would basically reach out to anybody who wanted to reach out back to me and things like "Do we actually have anything in common?" or "Do they value me as a human being?" didn't really matter. And those things matter in sex, trust and growth.
Now I know myself, my values and my sexuality a lot better and I end up with people who I am comfortable with so, in turn, the sex is more comfortable, more enjoyable and of course orgasms happen normally.
What helped me so much with my own sexual healing is exploring my sexuality. Normally that meant masturbating and finding what I enjoyed and didn't enjoy and that helped develop my sexuality. It wasn't always easy, for years I would have horrible reactions with my orgasms; shame, guilt and disgust. Then I realized I was human and an adult and a sexual human being. This all took time and finding the right people.