Answer: On various phases we feel closer or farther, but the most correct example is a person’s attitude to the group: How much does he feel that the group’s inner essence is the place where he wants to tune in, where he wants to “dissolve” like an embryo in a mother’s womb, like a child in his mother’s hands, to disappear and lose himself?
If a person still has something that hasn’t disappeared, that he hasn’t lost, it means his egoism is still alive. But as soon as a person dissolves in the group, from that moment on he begins to grow spiritually. Inside his sensation, desire, intentions, and effort a person can measure where he is: in which Reshimot, in which Sefirot, in what state, and how many Lights enter his Kelim.
He measures everything exclusively by his relationship with the right environment. After all, a person cannot measure anything in relation to the Light. The Light is a phenomenon inside the vessel, but not a notion in and of itself. According to Baal HaSulam’s definition, everything that enters the vessels is called “Light.”
From the 1st part of the Daily Kabbalah Lesson 12/27/10, Writings of Rabash