If you make the wrong decision, you make the wrong decision. That's all there is to it. There are few guarantees in life. One of them is that you will make lots of mistakes The worst thing you can do is wimp out and spend your life in suspended animation refusing to make a choice because it may not be a perfect one.
"The Pathfinder: How to Choose or Change Your Career for a Lifetime of Satisfaction and Success". Book by Nicholas Lore, January 5, 1998.