Astral Projection help!?

I need help with the leaving the body part. I feel some sort of energy around my body waving back and forth, but hard and it seems like I'm stuck in my body. If I concentrate to hard I'll go into a dream instead of the Astral Plane. But it's more like a video game replay of what game I just played. What do I do, so damn confused right now. It feels like I learning something everyone already knows, but kept secret.