From the book, Light of the Sun, Hints of Rosh HaShana: It is necessary to adhere and be connected with each other and be closed within one another in the hearts of everyone, so that we will be one union, serving the Creator wholeheartedly.
There is no partial in spirituality, meaning three, seven or nine Sefirot. There must be ten Sefirot because we don’t feel less than ten, we feel only a complete measure. This is like a machine within which data gathers and then suddenly the meter jumps. Like a watch that counts seconds inside, and when a whole minute is gathered, the pointer suddenly jumps to the following division.
That is exactly how our work happens too. This is because until we reach Malchut, we can work and pass through various states unconsciously. A person can go around and begin to do a multitude of things, but he must wait until he “gets it.” This is to say, he must pass through a particular number of actions, until it becomes difficult for him and he doesn’t know what to do with himself, and after this, he suddenly “gets it” and understands what he is doing! This is to say, he must reach saturation, a complete measure.
So when we gather, we must “adhere and be connected with each other and be closed within one another in the hearts of everyone, so that we will be one union, serving the Creator wholeheartedly,” meaning that it is necessary to discover a complete measure of desire. And this is a problem, because we seem to climb a mountain, and every time we fall, again and again. And so it is until a quantity of effort accumulates, a number of experiences are gathered, into a complete amount. As Baal HaSulam writes in Letter 19: “However, ‘time will do what the mind does not do.’ The Creator counts all the stimuli and collects them into the complete measure, which is the measure of hardness for the intended day.”
From the Preparatory Lesson for the Arava Convention, 1/30/14