I'm a bit confused about leaving the body. Here's what I've gathered.
Meditate before bed
Lay down on your back
Fully relax until you reach the state of vigil and dream.
Think you are a soul, and leave the body.
So when you get to the leaving part, do we actually attempt to leave like if we were to psychically get up from bed or do we imagine it - some say to imagine a rope pulling you.