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.  At the end of the day, I think it`s important that your own agreements have the consequences you want.
As for intransition, this word certainly has the connotation of perfectionism, and if we take it that way, we would indeed go crazy. (Besides, the impeccability and other agreements you make with yourself, not the requirements that Ruiz imposes on you.) On the other hand, if you engage perfectly with your word as your goal, if you commit to be as honest and kind as possible with your words, without waiting for perfection of yourself or to fight if you are too short, this agreement could improve your well-being with yourself. The fourth agreement allows readers to have a better understanding of the progress made in achieving their goals in life. This agreement involves the integration of the first three agreements into daily life and the exploitation of its own potential.  It is a matter of doing the best that can be managed individually, which varies from the different situations and circumstances that the individual may encounter.