Thinking about thinking

Excerpt from Into the Magic Shop, Chapter One, by Dr. James R. Doty, MD

"Do you know what a mantra is, Jim?"

I shook my head. I didn't have a clue.

"It's kind of like a song or a sound you make that helps you focus your mind. Just like you've been focusing your mind on your breathing or the candle, this is another way to trick your mind."