I don't have a manual, and I think everyone might do it a little differently, I just sit comfortably and focus on my breathing. I think something key is to con

I don't have a manual, and I think everyone might do it a little differently, I just sit comfortably and focus on my breathing. I think something key is to concentrate on something simple and constant (such as breathing in, breathing out) rather than not thinking about anything. Then, inevitably thoughts will arise, but when we think of something while meditating, we acknowledge it ("ok, I acknowledge that I'm thinking about this right now") and let the thought go, returning to focus on the breathing. That might keep you from falling asleep.