1) The document collects powerful sayings from the internet related to taking action, managing others, dealing with criticism, the value of enthusiasm, and achieving goals.
2) It includes sayings such as "I must do something" will solve more problems than "Something must be done" and that a good manager cares more about their employees' careers than their own.
3) The document provides advice on not letting criticism irritate you if unjust or unfounded, smiling if the criticism is ignorant, and learning from criticism if it is justified.