How to avoid addictive habit of over masturbating and how to have a healthy sex life

Patient: Doctor,I am being masturbating since sperms been not ejaculated, almost since last 13 years, my penis shrink and i get very quick ejaculation,I scare about my marriage life,(i am not yet married) kindly advise how can i escape from the addictive habit of masturbating and how to retain a healthy sex life.Thanking You

Doctor: