"People calculate too much and think too little. Thinking is a surprisingly underrated activity in investing. People who cannot be alone with their own thoughts for a long time are terrible candidates to become successful investors." - Charlie Munger
Put yourself in situations where you have too much at stake to waste time or resources—if you cannot afford to lose, you won’t. Place yourself on “death ground,” where your back is against the wall and you have to fight like hell to get out alive.