That voice is YOU. Your mind. Your soul. Your spirit. An untapped, uncontrolled resource that can and WILL create the memorable moments, successes, happiness, health, love...life. It's not a science. It doesn't require a higher education or some special talent. It's a GOD given gift that is overlooked everyday. Monkey mind is right. It does what it pleases in the confines of your head and it has been shaping your experiences and life.
So stop and listen...very closely. Let it rattle on. Don't give it any inkling that you are on to it. Then without warning take control. Feed it the thoughts YOU want to hear. There will be resistance. Lots of it. But don't worry it will relent. It will listen and before you know it, YOU are shaping every moment.
Stay with it ... and watch as a whole new world opens up to you.