Why Self-discipline as a tool?

Self-discipline is one of many personal development tools available to you. Of course it is not a panacea. Nevertheless, the problems which self-discipline can solve are important, and while there are other ways to solve these problems, self-discipline absolutely shreds them. Self-discipline can empower you to overcome any addiction or lose any amount of weight. It can wipe out procrastination, disorder, and ignorance. Within the domain of problems it can solve, self-discipline is simply unmatched. Moreover, it becomes a powerful teammate when combined with other tools like passion, goal-setting, and planning.