" What we’re conditioned to believe about ourselves, and what we’re programmed to think other people think about us, affects our performance, including how successful we are. It’s the same with placebos: What we’re conditioned to believe will happen when we take a pill, and what we think that everyone around us (including our doctors) expects will happen when we do, affects how our bodies respond to the pill. "

― Joe Dispenza , You Are the Placebo: Making Your Mind Matter