The Stress of Life is important to me for another reason: Reading Selye’s words, I come to understand that stress isn’t merely a negative physiologic experience; it has positive forms, too—such as excitement, anticipation, and motivation. While negative stress can be harmful—it can, in fact, kill you—positive stress is necessary for a fulfilling life. And with the right attitude, we can transform negative stress into positive stress. How? By focusing on the things we can control, instead of the things we can’t.