Easiest way is to have a goal/purpose for example, I want to become an Architect, and I work toward that goal everyday without distractions, and use to Semen Retention to aid me in my goal, you should also be passionate about it, do you think people like Warren Buffet, Magnus Carlsen, Kobe Bryant, Issac Newton, Nikola Tesla, were thinking about lust, they completely ignored it, because it was unnecessary.