What are some ways to help a man last longer during sex?

Focus: Sensate focus is one strategy as well as the squeeze technique. Some have had benefit from meds like paroxetine although it can have some side effects with wear-off. The old adage was to recite baseball statistics to yourself as a distraction - but any means of distraction may also delay ejaculation. Performance anxiety can take a twist here prompting an unnecessary sense of urgency.

Prolonging sex: I agree with trying to distract yourself for a moment prior to the time when an orgasm becomes inevitable. For example, one might try counting backwards from 100 by sevens. Like-100, 93, 86.. And so on. Good luck.