A fellow must know where he wants to go, if he is going to get anywhere. It is so easy just to drift along. Some people go through school as if they thought they were doing their families a favor. On a job, they work along in a humdrum way, interested only in their salary check. They don’t have a goal. When anyone crosses them up, they take their marbles and walk out. The people who go places and do things make the most of every situation. They are ready for the next thing that comes along on the road to their goal. They know what they want and are willing to go an extra mile.
– William C. Menninger