Consider the source.
When you get information, look at where or who it’s coming from. Do you trust them? Are they an expert?
When someone criticizes you. Do they know why they’re talking about and are they taking chances themselves. Pay no attention to hecklers.
You can get into big trouble (with school and the law) even by fake / joke threats of violence (bomb threat, etc.)
No jokes or pranks that have anything to do with violence.
It's very important to me, the idea of the scale of good and bad, of beauty and suffering. I think we should do everything we can to increase the beauty and to take away from the suffering. We have to work hard to tip the scale in the direction of good.
Inevitably you will make mistakes in your career. Someone will dress you down for it. It stings. But they are doing you a favor. Thank them for it. We all have to learn, and we can’t do that if our pride gets in the way. Be humble and accept constructive criticism.