Both times I've tried this, I have ended up thinking a lot about breath. It reminded me that I wrote about the breath of God in this blog, years ago. While meditating, I thought about breathing in, then breathing out. I first tried breathing in through my nose, out through my mouth, then all through my nose, and so on. Boring, right? A "revelation" I had is that the breath I'm taking in and the breath I'm breathing out are not the same. Maybe this is no revelation to you, but I was imagining a kind of pipe-like thing -- I pull in air and that air travels through a pipe or tunnel or something and comes out when I breathe out. No it doesn't! The breath I'm breathing out comes from somewhere inside me already. Not sure there's any big thing to learn from this, but there it is.
I suppose even thinking all this through might be considered my mind going off and failing to meditate?
Is this too much navel gazing? Who really cares what I think of as I'm breathing in and out?
Anyway, I'll be off now to buy some stickers. Two gold stars so far.