My biggest fear is ostracism. I deal with it by trying to be a good friend and a good person.
Without getting into too much detail, I experienced an incredibly traumatic event a few years ago. My biggest fear is having that event happen again.
Being alone.
Leaving the people I love with nothing but burdens. When my dad died it made me realize I wasn’t afraid of dying but afraid of dying while realizing I was leaving my family to struggle without me. I will die the same as everyone, and I just hope it’s quick enough to leave behind a life insurance policy, or far enough away I have time to make sure they’ll be financially secure. How I’m dealing with it is poorly because it just leads me to worry about money and bills every second of the day. I’m American, so I don’t see that changing anytime soon.
My biggest fear was spiders. I overcame it by learning more about them and learning to appreciate them. Now I actually enjoy the little buggers.