3. Death
if today were the last day of my life, would i want to do what i'm about to do today
if the answer is "no" for too many days in a row, something needs to change
knowing you are about to die is the best way to avoid thinking you have something to lose
your time is limited so don't be trapped living someone elses life.
know what you want to do, don't let others tell you what is best for you
stay hungry, stay foolish. never be too satisfied, or too careful