Everyone knows that regular exercise leads to physical strength. But how do we strengthen ourselves mentally for the truly tough times? Through her years counselling others and her own experiences of personal loss, psychotherapist Amy Morin realised it is often the habits we cannot break that hold us back from true success and happiness. Now, for the first time, the author expands upon the 13 Things from her viral post that reached millions worldwide and shares her tried-and- true practices for increasing mental strength. Morin writes with searing honesty, incorporating anecdotes from her work as a psychotherapist as well as personal stories of how she coped when tragedy threatened to consume her. Increasing your mental strength can change your entire attitude. It takes practice and hard work, but with Morin's tips, exercises and troubleshooting advice, it is possible to not only fortify your mental muscle but also drastically improve the quality of your life.