Inner game is what enables you to act. Nothing less, nothing more.
The Longer Answer
Timothy Gallwey first coined the term ‘inner game’ in his book The Inner Game of Tennis: The Classic Guide to the Mental Side of Peak Performance. He wrote that “every game is composed of two parts, an outer game and an inner game”; where the outer game is fought against another opponent and the inner game is fought against your own inner doubts and fears.
via What is Inner Game?.