Grief would not be grief if we did not yearn for and long for the person we have just lost. If you try to put these fantasies out of your mind by telling yourself, "I'm not going to dream about her" or "I'm not going to think about how we have sex anymore," your condition will worsen even more. In one longstanding study, a group of subjects were allowed to think about anything but a polar bear. Guess what everyone was thinking? Of course, about the polar bear!
Or help others When you experience heartache, the natural pain reliever is to stop being consumed by your own suffering. When you turn to another person, especially if he is in a similar situation, you forget about yourself in that moment. Both of you feel better.