Don’t focus on the climax.
One reason that many men suffer from premature ejaculation is they can’t take their focus off of the climax. Even if you’re focusing on lasting longer, the thought is still there. Instead, focus on everything but the climax. Find other means of sexual pleasure besides the climax. There is something inherently intimate to be touching your partner in all of these different ways. Try exploring their body for your pleasure. You’ll be surprised how much longer you will last!