Serial entrepreneur Tina Roth Eisenberg, who runs the popular design blog Swiss Miss and the temporary tattoo company Tattly, among others, says she asks one question to help keep herself going: “If you were a superhero, what would your superpower be?”

Knowing your superpower means you know yourself well enough to have a focus, and that's the same competitive advantage that makes you so great at what you do. It's the quality you're most proud of, the one thing that makes you stand out, and what gives you an edge over everyone else.