1. You feel vulnerable
Humans are a proud species, and we continuously strive for meaning and purpose for our own lives in such a capacity that it can be considered vain. They feel a benevolent being or force has created a single plan just for themselves as a reward for devotion, but that’s an argument for another time. We as human beings have a tendency to be selfish, entitled, and fall into pride — which isn’t always bad, but too much of it, will leave you falling back into the life you are trying to get away from.
Solution: Here’s the thing about being afraid to be wrong — how else will you ever be right? Scientists are wrong hundreds of times before they get something right, so why can’t you be? We’ll never stop learning, thus we can only grow by letting ourselves be vulnerable from time to time and picking our battles. Of course one must be careful, but you should still take risks and allow yourself to be vulnerable — even if you wind up being wrong about that person, at least you did your part.