In your mind, you have a throne; in your mind, you have a hierarchy, and that hierarchy should be right and clear. As a young person, if sex comes to occupy a very high position in your mental hierarchy, then you will have problems. That does not mean that you have to give no place to sex in this hierarchical system. Give a place to sex that sex deserves. And, for sure, it does not deserve that most place.
Sex is neither high nor low; it is just a physical thing. It becomes lowly when it tries to occupy the place of the highest.