Men face both mental barriers and physical barriers to great sex. You don't want to rock the boat. But if you're like a lot of men, sex may not be as good as you think it could be. Here are some things you can try at home. A stab at a sexual role-play may be rendered ridiculous by an ill-timed call and rambling answering machine message from your mother-in-law. Many self-help books and educational videos offer variations on these exercises. You were addled with anxiety , plagued by concerns over your performance, and worried about the worthiness of your physique during lovemaking.