It is the doing-ness of knowledge that creates experience. Knowledge is good, but until you put it into action, it's just more ego. Doing-ness does not mean perfection.
Balance of both dualities is the key to non-attachment. Make decisions by what is in alignment with your true self, not what the ego wants you to do. Work from that alignment, and that balance. You will feel the freedom of being truly present.
Love is what you are born with, fear is what you learn.
The spiritual journey is the unlearning of fear and the acceptance of love back in your heart.
-Zen wisdom