Answer: It only depends on the importance of the goal. In fact, there is no tiredness. Suppose you have a small child and you are busy with him 24 hours a day with feeding, diapers, and all the rest. This, of course, is very hard work, but it is the physical fatigue in our world.
In the spiritual world, if a person advances, he is nourished by the Light and doesn’t get tired. This doesn’t mean that he doesn’t sleep or eat, and so on. He needs to do all that, but the detachment, the mental fatigue, doesn’t exist. Of course, he sleeps physiologically, but only because it is essential for his body.
That is, if we are charged by the upper Light, constantly looking for a way to be fully focused straight on it, then we always fulfill our normal physiological needs: the basic amount of calories, sleep, and so forth. It will always be on a normal level, and this will be no problem. But it must be observed! Kabbalists say that a person needs 60 breaths while he sleeps.
We are in a field of forces. You may think that it is mysticism, but actually it is a science, physics, and vectors. How do I focus myself on that field, in the inverse square of the distance between us, that is, direction, the direction of the angle so that I catch the energy from it? Everything follows the same laws operating in our world with some form of energy like radiation, for example.
However, once again, we encounter the problem of mutual guarantee: Will you support your friends? Because a person in an instant may lose the direction, and then nothing works. In an instant, he may find himself in some incomprehensible space! And then any external, silly, narrow-minded, external interruptions begin to influence him.
So, the most important thing is to create the need in the group to constantly support each of its members. Afterward, there is nothing to worry about. You will always succeed.
From the Kharkov Convention “Uniting to Ascend” 8/17/12, Lesson 2