It is possible to have too much of a good thing. In excess, most endeavors and possessions take on the characteristics of their opposite. Thus: Pacifists become militants. Freedom fighters become tyrants. Blessings become curses. Help becomes hindrance. More becomes less. Too much, too many, and too often of what you want becomes what you don’t want. This is true of possessions and even time. Lifestyle Design is thus not interested in creating an excess of idle time, which is poisonous, but the positive use of free time, defined simply as doing what you want as opposed to what you feel obligated to do.
Timothy Ferriss, The 4-Hour Workweek, 9%