A friend and I were walking and he had an easy choice to make, but struggled anyway. I mentioned that he would be decisive again one day. He questioned whether or not his past decisiveness was part of his current problems. He feared being too rigid again.
My point is this.
A decisive man is able to make a decision based on available facts or ideas. An indecisive man will worry about all of the variables and use circular logic to forestall any choices. Being decisive does not lead to stubbornness. A truly decisive man may change his viewpoint as needs arise, but still does not worry about invisible causalities.