In progress, we work both with our Nagual (unstructured) and with tonal (structured) aspects of the self. Too many people want to go directly to Nagual without doing the necessary work with the Tonal. Working with the Nagual and the world of energy is fun, but without the base of the tonal, we will end up in a dead end, or in the worst case, in the imagination. If a warrior has succumbed to the imagination, it is often impossible to redeem himself. It`s best to lay a solid foundation in the tonal. Light is the living messenger who carries you the message of creation/tone. Light has a memory and can travel through the universe for billions of years. When he is received in a telescope, he remembers and communicates exactly what was going on when he began his journey. When he leaves a star and travels 13 billion years to get there, he remembers exactly the event that happened 13 billion years ago. He has a perfect memory. This light is reflected by the object, with a perfect reminder of the object. It affects your organ of perception, your eye, which has been designed to perceive light perfectly. This “message of light” must pass through channels in your mind to get to where you actually perceive it in a neurological and conscious way.
In addition to demhur`s book and book, there is also an eBook, a four-colour picture book, a card game and an online course.  To perceive energy, we need to increase our frequency. To increase our frequency, we must begin by cleaning, purifying, healing and strengthening the human tone or our body`s structure. The human tonal consists of three bodies, the mental body, the emotional body and the physical body. Each body of man`s structure has a specific purpose and a particular function. It is important that each body functions properly or that there is a dysfunction in the human system. A dysfunctional tone blocks our ability to perceive The Nagual and second Attention, or at best any perception we have is perverted. The book is based on a series of spiritual beliefs, held by Toltec`s seniors, to help readers transform their lives into a new experience of freedom, happiness and love.  According to the author, everything a man does is based on agreements he has made with himself, with others, with God and with life itself.
 In these agreements, we can tell ourselves who they are, how to behave, what is possible and what is impossible.  Some agreements that create individuals may not cause problems, but there are certain arrangements that come from a place of fear and have the power to deplete emotional energy and reduce a person`s self-esteem.  The book states that these self-limiting agreements cause unnecessary suffering.  Ruiz also believes that to find personal joy, one must get rid of socially imposed and fear-based agreements that can unconsciously influence the individual`s behaviour and thinking.  Another fundamental premise of the book suggests that much of the suffering is created and that most people have the ability to transform themselves and the negative thoughts they have about the situations in their lives.  The author identifies the sources of unhappiness in life and proposes four beneficial agreements that can be concluded with oneself to improve their general state of well-being. By pacting with these four most important chords, an individual is able to dramatically influence the amount of happiness he feels in his life, regardless of external circumstances.  If you live these four practices, your life will change dramatically.
At first, these new habits will be difficult and you will fall into ruins countless times.