Over the course of four years at Duke and 14 in the NBA, J.J. Redick has proven himself to be one of basketball’s deadliest sharpshooters. A few hundreds of thousands of jumpers later, he has some thoughts on building the self-belief that will keep you confident under immense pressure and through any slump. Plus: the power of preparation, the joy of exceeding your own expectations, and the key to not psyching yourself out.