In a get-better mind-set, we’re always trying to improve, asking ourselves, OK, what could I do a little better? What can I learn for next time? This mind-set should not be limited to post-failure moments, either, but maintained in the midst of difficulties, as well. People who are committed to mastery don’t freak out (as much) when they hit an obstacle. They reassess and then get going again, thinking they can get better. That’s why you want someone in your Corner Four who possesses a similar mentality.