The key to success in entrepreneurship isn’t traditional intelligence, like a high IQ. It’s grit. Grit is a combination of persistence, passion, and resilience. Persistence keeps you focused when the going gets tough. Passion is pretty self-explanatory: it’s love and care for what you do. Resilience gives you the mental courage necessary to keep trying. You might get knocked off the horse, but you will get up and get back in the saddle.