It is not arrogant to believe in the validity of your own ideas. It is not prideful.
Act on what you believe, and do not apologize for it. Take caution beforehand, though, and make sure you are believing in the right thing.
You will not please everybody. Do not try to.
There are those who will never change. If you should stumble upon such a person, ignore them. Dogs will always bark, haters will always hate, ignorant people will always discharge stupid-juice from every gland in their body. This is the way it is.
"To live well is the best revenge."
"I’ll do it later" is the same as "I’ll do it at the last minute" is the same as "I’ll do a meh job." Do it now.
There will always be a legitimate excuse not to do something. If you should be doing it, do it anyway. This is what it means to sacrifice - to do something despite having an excuse to not do it.
There’s a time for work and a time for rest. Do both properly: work without distraction, rest without a care.
There is a small percentage of you that will always be determined by who you spend time with. Ensure that that small percentage brings the average of your personality up, not down.
Emotions can cloud judgment. Before acting on an impulse of anger, or happiness, or jealousy, or rage, take a step back. Then another. Then, if you should decide that you are right to act, then act intelligently. The greatest peace - and the greatest revenge - can only be achieved through thoughtfulness. Remember that.
Do not pay too much attention to what you deserve - such thoughts can only end in miserable dialogues about how unfair the world is. Go fingerpaint instead.
Decide what type of person you want to be. Consider the type of things that type of person might do. Go do them.
Try new things. You will fail. It’s okay. Blush and laugh and awkward-moment your way through it.
"My revenge would be greater, grander. Biblical. You deserve more than some sloppy display. You have earned, through your quiet crimes, a systematic destruction, a calculated disarmament, planned and executed with the finesse of a seasoned seamstress, until you are bare and exposed. A frightened child, no longer protected by a shield of sarcastic wit, or pride, or undeserved power. A shivering doe, orphaned and outcast, cowering beneath a white-hot blade. Your body is yours. Keep the wretched thing. It is your soul I am after."