This is important advice for a broad range of situations. When dealing with certain personalities, we must realize that they want our attention regardless of the sentiment. They are perfectly happy with negative attention as well as the praise. As long as you are reacting to them, they have you right where they want you. And so, one of the most powerful things we can do, in the right timing is get away, ignore, refresh, and get ready to stand up again when the time is right. Of course, the time is always right to stand against injustice, but in this sense I agree with you that we need to take control of our environment so that we can stay healthy long term.