Determine a single measure that you can use to grade your progress and success in each area of your life. Refer to it daily.
Persistence is the great measure of individual human character.
Never settle for anything less than your best.
Time is your most precious resource; make every minute count.
If you wish to achieve worthwhile things in your personal and career life, you must become a worthwhile person in your own self-development.
Willpower is essential to the accomplishment of anything worthwhile.