how do i know if the choice i make is a good one

I'm scared that the choice I make might be a bad one, but it might also be a good one so i have no idea of what to do. I've always been indecisive and have a very, very hard time making choices, but now I'm put on the spot and I don't know if what I choose is good or not, and if my life is going to go down or up. I genuinely don't know how to live with the choices I make. I have always been afraid of how things turn out.

any tips or simlar experiences may help, even though i probably wont get any serious replies.