As you practice regularly and apply good practice habits, you develop a self-discipline that will transfer to other areas of your life. This is one of the great benefits of learning to play an instrument at any age.
Playing an instrument should be fun, but most would agree that practice is work. Poor practice habits appear when playing and practice are confused. Make certain that during practice time you discipline yourself to use perfect practice. If you reward yourself regularly for staying on track, perfect practice will become an enjoyable habit.