Always stay positive and human - never get angry and never give in.
Leftists hate themselves, and their lives. Nothing bothers them more than happy, smart and self-assured people.
Also, they are a small minority of almost any group that isn’t self-selected. The vast majority of people in the middle don’t care and simply much prefer to deal with happy and polite people.
“never get angry and never give in.”
And never roll your eyes when a lib opens his yap. It does not enhance your career. “How do you know?”, you ask...