People prefer to avoid loss than acquire equivalent gains.
The tendency for people to overestimate their ability to control events.
The desire to be and appear consistent with what we have already done.
We can distort our thinking when it is in our own interest to do so.
Doing one thing means not being able to do another.
Don't attribute to malice that which is more easily explained by stupidity.
Simpler explanations are more likely to be true than complicated ones.
Consider your actions and their immediate consequences, but the subsequent effects of those actions as well.
When you are honest about where your knowledge is lacking you know where you are vulnerable and where you can improve.
Train yourself how to think like a principal, and eventually you will become a principal.
People only act if they're currently dissatisfied, have a vision for what could be and a path to get there.