In the act of creation, God contracted him/herself to make something very finite out of the infinite. God, referred to as the Ein Sof, is "The Infinite,";the Boundless One, the Being that has no end. TzimTzum is a term used in Lurianic Kabbalah that describes this constriction.
So when God decided to create the Universe, God emptied him/herself by withdrawing the Infinite Light into a single spectacular light and created a world that was outside of him/herself.
This was an act of love.
When you love someone, and you want to give them the "space" that they desire to flourish, the discipline of contracting yourself allows the other person’s needs to become a priority. You shrink yourself so that something greater can grow. Neither disappears. The concealment is only temporary while each person finds their own purpose and brings their gifts back to the team. The void is filled with renewed joy and fulfillment from a deeper dimension.
As the mother of four grown children, I practice contraction daily. When my adult daughter calls me to ask advice about a particular dilemma of the moment, my first response is to enlarge her query. By asking questions rather than giving answers, I place her concern in the center of my beingness; my capabilities to discern her reality becomes limitless if not, like the Ein Sof, infinite.