When coaching a voice student through self-doubt, I often allude to “limiting beliefs.” I’m borrowing this phrase from a larger zeitgeist—a quick Google will show you how prolific this concept is. The semantics of  “limiting beliefs” reveals both the poison and the antidote. Limiting quantifies the cost of self-doubt to our potential, while belief suggests that a shift in mindset is possible. I recently joined a workout that is a combination of yoga and aerobics­—many of the exercise sequences incorporate use of a mini-trampoline. The class is rigorous and the element of bouncing is equal parts exhilarating and intimidating. I often catch myself thinking two things: “man, these other women…