If you hold back on the emotions - if you don't allow yourself to go all the way through them - you can never get to being detached, you're too busy being afraid. You're afraid of the pain, you're afraid of the grief. You're afraid of the vulnerability that loving entails. But by throwing yourself into these emotions, by allowing yourself to dive in, all the way, over your head even, you experience them fully and completely. You know what pain is. You know what love is. You know what grief is. And only then can you say, "All right. I have experienced that emotion. I recognize that emotion. Now I need to detach from that emotion for a moment.