We’ve all got that voice in our heads. The internal heckler perched in your skull’s cheap seats, shouting things like “You’re not good enough,” or “Why are you even trying?” (My internal voice sounds like a mix between my fifth-grade gym teacher and one of those scary moms from a reality show about cheerleading.)

This voice narrates our lives like it’s Ken Burns in a documentary about self-doubt. It’s not helpful. But we listen. We always listen. So what’s to be done?

Let’s look in a less-than...