What does it mean to get back up and try again? Should one? Is that always a wise decision? Is running all the fuck away sometimes the right decision?

I’m noticing my intense insecurity lately. I don’t feel like any of my decisions are right… but I can’t see how anyone else is right either. Or even when I can see that someone else’s behavior is completely and totally right for them it wouldn’t be right for me at all. Is that ok? Can I do anything about it?