Thanissaro Bhikkhu "De-thinking Thinking"

"And instead of thinking of the body pulling the breath in, remember that your primary experience of the body is breath, an energy flow. Our perceptions tend to solidify that, and so we often think that the solid parts of the body are our primary experience of the body, and that breath is something secondary. Actually, it’s the other way around. The sensation of energy is primary. So allow yourself to think in that other-way-around. Your sense of the solid body is sitting here in the breath, in the process of breathing. Whatever you perceive as an immediate, primary experience of “body,” think of it as breath. If you’re having trouble with the breathing, if your breath seems constricted or tight, remind yourself of this, and it’ll open up a lot.