For 30 days, when I “believed” I was sick, my body and mind followed suit. I experienced a feeling of separation and fear that, at times, seemed unbearable. But the moment I programmed my mind with the possibility of a new, positive, expansive belief (“I am a healthy person”), everything shifted. 

In Western society, we have largely been taught to think of the psyche as a “mono-mind.” If we’ve been conditioned to see ourselves...