Answer:
No, we should not fear failure. Some good things that come out of failing are learning from what you did to make the mistake and not making that mistake again. Another good thing is that if you fail at something and someone goes to do the same thing after you they can learn from you so you are helping other people, potentially. If you fail at something then obviously it wasn't for you so it can give you an opportunity to try something different. A downside from failing though is your self-esteem. It can damage your self-esteem and how you look at yourself. There are good things and bad things about failing at something but we shouldn't fear failure because it helps make us who we are.
Hope this helps!!