Many people take the principles they learn through parkour and apply them to their lives. By challenging themselves in parkour both mentally and physically, it becomes easier to deal with problems and obstacles in everyday life. When a difficult situation comes up in daily life, a parkour practitioner can see this as any other obstacle which they've learned to overcome quickly, efficiently, and without disruption to their intended path. Another part of the overall Parkour philosophy is to be useful in a variety of situations. Parkour itself does not strive to be a "complete" discipline.