Answer: Our work is happening between the feelings and the mind, in the middle line. One needs to keep to this middle line in one’s thoughts, desires, intentions, and relationships, in everything. A one-way bias in any direction is not acceptable. Since all of this is being revealed in creation opposite to the Creator, it must be revealed in the middle line.
The whole of the nature exists only thanks to the fact that it is in some medium, the intermediate states between the absolute plus and minus, in a balance between extreme states.
However, on the human level, balance is not reached by averaging, like it is on the still, vegetative, or animate levels, but by the means that the minus and the plus are uniting together! The left and the right lines do not balance themselves out in the middle, but are united at the center, and that is why this middle line turns out to be on a higher level than their simple sum. This is the difference between the middle line in our world and in the spiritual.
It needs to be understood that all of these concepts, which we are studying on ourselves, will arrive at a balance and will provide the right approach for us towards the solution of any kind of problems.
From the 1st part of the Daily Kabbalah Lesson 5/20/12, “Talk About Past Conventions”