Nietzsche once said,"A wise man never loses anything if he has himself." In other words, the wise will lose nothing, as long as they master themselves. What does the "has himself " mean? I think it refers to answering yourself, your life and future.
The words emphasis on the importance of our responsibility to life. It has been a common phenomenon that more and more youngsters get confused about their life. They don't realize their dreams or set certain goals. In a word, they live aimlessly and irresponsibly.
If we don't have positive, feasible goals, we'll lose ourselves and laze away our life! It should be noted that it is not alarmism. My mom always regards the ability to control ourselves as a matter of primary importance. Her motto: Future is unpredictable, have yourself!