In her latest groundbreaking book, The Let Them Theory, Mel Robbins—New York Times bestselling author and one of the world's most respected experts on motivation, confidence, and mindset—teaches you how to stop wasting energy on what you can't control and start focusing on what truly matters: YOU. Your happiness. Your goals. Your life.

Dr. Robert Glover has dubbed the "Nice Guy Syndrome" trying too hard to please others while neglecting one's own needs, thus causing unhappiness and resentfulness. It's no wonder that unfulfilled Nice Guys lash out in frustration at their loved ones, claims Dr. Glover.

There's an 80 percent chance you're poor. Time poor, that is. Four out of five adults report feeling that they have too much to do and not enough time to do it. These time-poor people experience less joy each day. They laugh less. They are less healthy, less productive, and more likely to divorce. In one study, time stress produced a stronger negative effect on happiness than unemployment. How can we escape the time traps that make us feel this way and keep us from living our best lives?  

It's no secret that we're pushed to the limit. Today's professionals feel rushed, overwhelmed, and perennially behind. How can we break out of the cycle and create the kind of interesting, meaningful lives that we all seek? Just as CEOs who optimize for quarterly profits often fail to make the strategic investments necessary for long-term growth, the same is true in our own personal and professional lives.

Most people think success comes from good luck or enormous talent, but many successful people achieve their accomplishments in a simpler way: through self-discipline. Brian Tracy knows this firsthand. He didn’t graduate from high school, and after working for a few years as a laborer, he realized he had limited skills and a limited future. But through the power of self-discipline, he changed his life.