We're paralyzed by the fear of doing something. What if we do something unnecessary? What if we do something but it makes things worse? What if do something

We're paralyzed by the fear of doing something. What if we do something unnecessary? What if we do something but it makes things worse? What if do something but it costs too much? I'm almost positive we (humans) won't do anything until there is absolutely no other choice but to do something.