“To succeed in the ‘outer world,’ you must discipline yourself to focus and concentrate, work hard at your job, take continuous action toward your goals, and become better and more capable as you move onward and upward in life. To succeed in the ‘inner world,’ however, requires almost the opposite abilities. To achieve inner peace, you must discipline yourself to let go of everything that can disrupt your sense of inner peace and contentment.”

Brian Tracy, No Excuses! (Page 286)