On the other hand, it's easy for me to have orgasms by myself, when I can read erotica or just relax in the bathtub and not worry about anything. The contrast is severe. Oh, there's one more thing. I was sexually abused in the past. I don't know if it's still affecting me, but it may well be.
Many women have difficulty reaching orgasm with a partner.
You're so busy thinking, that you lose out on the sensations of the moment. You feel yourself becoming aroused, but you're so afraid that you won't have an orgasm that you give up trying. You repress your own sexual response. You're afraid of asking too much of your partner and coming across as demanding. You are in conflict about, or angry at, the person you're sleeping with.