Answer: Our nature is the egoistic desire to receive, to enjoy ourselves, to be within ourselves, and for ourselves.
And the opposite nature that we do not feel is altruism: caring for others, love for others. We do not feel this, but we can somewhat imagine it from the example of how a mother treats her child, although these are also egoistic manifestations. In our world, there can be no true altruistic relation between one creature and another.
But by studying Kabbalah, we will see that this is still possible. There is the upper light—a special substance that can affect and change us. And we will become different.
From KabTV’s “Fundamentals of Kabbalah,” 4/19/20