We can do more than just think; we also have the power simply to be aware of things—without judgment, without the ego. This is not to denigrate thinking, just to say that thinking without awareness can be a harsh master.
10% Happier
Harris' book, 10% Happier: How I Tamed the Voice in My Head, Reduced Stress Without Losing My Edge, and Found Self-Help That Really Works – a True Story, was published in March 2014.