Being able to quit things ...
More phrases
Effort only fully releases its reward after a person refuses to quit.
Never complain and never explain.
A good plan violently executed now is better than a perfect plan executed next week.
George S. Patton
Problems are not stop signs, they are guidelines.
Robert Schuller
Never give up, for that is just the place and time that the tide will turn.
Harriet Beecher Stowe
Quotes from the same author
To enjoy life, you don't need fancy nonsense, but you do need to control your time and realize that most things just aren't as serious as you make them out to be.
Tim Ferriss
Money is multiplied in practical value depending on the number of W's you control in your life: what you do, when you do it, where you do it, and with whom you do it.
Tim Ferriss
Which 20% of sources are causing 80% of my problems and unhappiness? Which 20% of sources are resulting in 80% of my desired outcomes and happiness?
Tim Ferriss
What you do is infinitely more important than how you do it.
Tim Ferriss
Lack of time is actually lack of priorities.
Tim Ferriss