To experience the satisfaction and enjoyment of success in life, a definitive goal is essential. Many people fail at this vital point. The goal must be definite and specific, not in any sense vague or fuzzy. And to prove attainable, its image needs to be sharpened and resharpened continually, so that it stands out vividly in your thoughts. You must know, at all times, precisely and for certain what it is you want to accomplish and achieve. Strong and organized purposefulness toward a definite objective will focus your powers into a strong motivation in attainment of your goal.
Norman Vincent Peale (1970). “Norman Vincent Peale's treasury of courage and confidence”