Judgement
It's so easy to say, don't judge a book... but guess what? everyone does, and is so unapologetic about it until it's time for them to be judged then silence, guilt, fear and shame comes to play and stay in their minds. Some say, "Don't dish out what you can't handle". I think it's true because when you judge, you have to expect karma to happen. So before you judge, just take time to understand the situation because you too maybe put in a similar position and would not want to be judged for it.