Knowing yourself and your responses is important--and so is communicating that information to any partners you might have. Mind-reading is a really romantic fantasy, and while some people can tune into their partner's arousal, the most fool-proof way for them to know how you’re feeling is to be direct. For some partners, that idea that there is one great trick for orgasm prevents them from actually realizing what we do like. So we should talk about it!
Part of this process can also involve exploring and experimenting. Some people who have a hard time orgasming find that switching positions, moving their pelvis, breathing more deeply, fantasizing, making sounds, and trying a vibrator are good strategies.
And don’t forget foreplay! It takes some time for the body to become highly aroused. You can try to hurry it with techniques or toys, which might work to an extent. But the strongest orgasms happen after some build-up, making duration of play a very pro-erotic (and -orgasmic!) factor.