It doesn't have to be a wise decision or a perfect one. Just make one.
In fact, make several. Make more decisions could be your three word mantra.
No decision is a decision as well, the decision not to decide. Not deciding is usually the wrong decision. If you are the go-to person, the one who can decide, you'll make more of a difference. It doesn't matter so much that you're right, it matters that you decided.
Of course it's risky and painful. That's why it's a rare and valuable skill.
I remember girls coming up to me, girls that were on my executive committee, asking me to make decisions that did not matter. Asking me to make decisions that I really relied on them to make. Like should we have cake or pie at the luncheon. It really did not matter which & that was when I first realized that some people cannot make decisions. Now, I'm not saying that I look down on these people, I am just saying that I realized that I am different from those people in that I am able to do so. I probably got it from my mom who always says "just do it, even if it's wrong". Which is partly what lead me to start my own company. The idea that I don't have to do it right, I don't even have to succeed, I just have to make the decision & do it.
I think that more people would strike out on their own if they didn't have the pressure to succeed. But what I think a lot of people do not realize is that success doesn't have to be your primary goal. It certainly isn't mine. And it doesn't have to be a point of embarrassment if you don't succeed. Most "successful" people have failed at something at one time or another and what made them successful was the ability to pick themselves up and try again. They just made the decision to do it.