When we make a decision, a new path emerges. If nothing emerges, you haven't made a decision, you've just come to a conclusion. A conclusion says "you should do this" whereas a decision says "let's do this". Our rational mind is good at generating conclusions, but our emotional mind makes decisions. The reason is our navigator but emotion presses the gas pedal.
The word "decide" literally means "to cut off". Making a decision is about cutting off all other options, chopping away what's irrelevant. A firm decision is like a future set in stone. That's why visionaries are so powerful, they see a future as if it already exists, and they decide to make it happen. Think about Steve Jobs who said, "We started out to get a computer in the hands of everyday people, and we succeeded beyond our wildest dreams"
So the point is, start with the vision in mind. Make it crystal clear where you want to go, or who you want to be, and ask yourself if you're willing to take responsibility for it. Decisions and responsibility go hand in hand. Without responsibility, there can be no decision. So find out what it is you want, and cut off everything else that's irrelevant. And then you will see a path emerge.