Your body is wired for survival. If it can produce the emotion, it has a use. The issue today is we no longer understand how to interpret that use since we live in mostly safe environments. So don't learn to ignore any emotion. Learn to find the lesson it's teaching and utilize it to improve your life. That doesn't mean you need to show and express it for the world to see, though. It just means to learn how to process the data so it cycles through like it was intended to do.