The Great Sex Rescue by Kevin Lehman

Kevin Lehman was the only male author I have ever seen asking men to get into the headspace of the woman in pain. If you're really working on orgasm if orgasm is difficult and if pleasure is difficult for you having sex right when you're really super tired is probably not going to help. And it may help to change the time of date that you try to have sex. Also if you're allowing your mind to wander you're not going to feel pleasure and you're more likely to fall asleep.