Make a decision
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.