For as he thinketh in his heart, so is he.
This is not a slogan. It is a law, sitting in plain sight in the same scripture used to keep people afraid. What you think, repeatedly and with feeling, you become. Your inner world is not a passive commentary on your life — it is the blueprint your life is being built from.
Modern teachers say it in newer language. The mind and body are one continuous system. Emotion is thought made physical. What you rehearse in your imagination and feel in your body, you condition yourself to live. You are not at the mercy of your circumstances—you are, moment by moment, participating in creating them through where you place your attention, your language, your focus, and your state.