Every person on Earth goes through his own lessons, regardless of whether he understands it or not. These lessons consist of passing through personal polarities or, in other words, dualities. All the problems that concern a person and all the situations that arise in his life determine the nature of his lessons, and any of them can be reduced to a certain duality. Each duality is like a gate, and the lesson is to walk exactly through the middle of such a gate. This is called the Path of Discipleship. But it is one thing to know where and how you must enter, and another thing to have the level of skill that allows you to do it. The middle is the place where both polarities of your personal duality are balanced: plus and minus. This is the place where you are harmonious and calm, and this book is about how to achieve such harmony.