meditation

I read a post a few weeks back on a meditation exercise to try while davening. It talked about holding your hands and envisioning your words forming a ball in your hands that you periodically release and send up to Hashem. I've been trying to find the post and can't. Does anyone have any idea what I'm talking about?

I don't think I did it right... My hands felt so heavy, like they were being forced apart. I spent far too much time thinking about the ball and my hands. I got so caught up in the mechanics of it all that it makes me think that I've missed the point entirely. I wish I could find that post again... Please drop me a note if you have any idea where I should look. Thanks!