Our Self-Driving System: The Soul

How successful is the rational mind in providing us with long-term satisfaction? How successful has been the strategic planning of our own lives, and how successful have been our decisions in providing us with peace and happiness? If we look back in time, we will realize that many of our rational decisions didn't turn out to be fruitful for us and instead affected us adversely in the journey of our lives. This constantly thinking mind has also caused us a lot of stress and anxiety. What if there is a system within us, which not only makes the right decisions for us in accordance with the purpose of our lives, but also lets us sit back and relax, and drives our being through the journey of our lives?