How do you last for longer?

It comes with practice. As you get used to having sex, you will last longer and longer. Some methods are to think about work, golfing, sports, etc., during sex when you notice you are getting ready to have an orgasm. Also try using a product or equivalent such as "Numzit," a tooth pain relief medicine. Rub this on the head of your penis to temporarily deaden the nerve endings to prolong the time before orgasm. There are no lasting effects with this medication, and it is safe.