Becoming Familiar with the Concept of Kavana - I

The world of Torah with which we are familiar is almost solely focused on actions and speech. The study of Torah revolves primarily around the revealed Torah which focuses on fulfilling the action Mitzvos, and results in knowledge of Halacha. By contrast, the study of the Inner Torah is intended to instruct the worlds of intent, the thoughts and desires of the heart in the exact same way that the study of Talmud and Halachic codes trains the action limbs in the fulfillment of Mitzvos.
The world does not yet appreciate the broad richness of the worlds of thought and intent. We stand before these inner concepts and they appear blurry to us. We believe what our Sages teach - that thoughts have an effect and intent makes a powerful impression, but within himself the person is not even close to understanding. He thinks that words and actions are much more powerful than thought. He sees thought as a tool for inspiration to action, but not as a force which acts directly.
However, the concept  and knowledge of Kavana is very blurry. What is Kavana in the heart? Is it scrunching up the face and moving rapidly while davening? Is creating wrinkles in one's forehead a means of concentration? We are standing before poorly understood concepts of which we only have the most infantile comprehension.
ויחד לבבנו פ"ד