I can imagine that the first time you hear about moneyfulness and that there’s a direct link to mindfulness, you want to know more about mindfulness as well. For an objective point of view I took the liberty of copying the Wikipedia text, which you will find below. It’s rather a technical explanation.
I will explain it in my own words. Basically mindfulness brings you peace of mind by paying attention to being on purpose in the present without judging. Paying attention to being on purpose is all about people living on autopilot. If you live your life on autopilot you don’t pay attention, and what your doing has hardly any purpose.