Also, try to make foreplay last a little longer than usual and see if that helps. Engaging in some playful teasing for a while prior to penetration can build up arousal and desire making it much more likely that sex will culminate with an orgasm. However, I do want to note that making sex orgasm-centric isn’t going to help. Try not to focus on orgasm because sex can be really satisfying, with or without orgasm. Consider the orgasm just the cherry on top of an already delightful sundae.
