It's roughly 60% mental, while the other 40% is retraining your body to control the sensitivity. Premature release has been studied by societies all over the world for thousands of years, mainly by the ancient high societies that used to have multiple partners. I lost count of how many scrolls came from Asia, Egypt, Byzantine Empire, and even the Greek and Roman literatures. They came up with some crazy techniques and methods to control their premature releases that baffled even the modern medical world.