To take that a step beyond that, people are often not just controlled by their mouth, the dog is not just controlled by his tail to speak in a riddle.
People are also controlled by their habits, their mistakes, their choices both good and bad, subconsciously for the most part, they choose to do based on what they did as opposed to trying to rethink from a perspective of what they want to do, who they want to be, they often become like a rock rolling down a hill in how they make choices.
Meaning, decision-making can often be fueled by the gravity which can pull us down as if we were a rock seeking the path of least resistance downwards as opposed to trying take a second to stop the roll to possibly reevaluate choices.
By the way, running down hill is fun and the momentum fueled me to go faster and faster; but such a risk could end in disaster.