Dual thinking is always a confrontation. We become in opposition to the world, to nature, to other people, we divide the world into black and white for ease of understanding. But good and bad events in the world don't happen, all cyclically and have reasons that we cannot sometimes influence, we just have to deal with the consequences. Probably the struggle with the duality of thinking is what can lead a person to peace of mind. When you can see how wide the range of emotional colors of a person is, what baggage of experience each of us carries with him and why certain things happen.
Real freedom appears when the duality of perception disappears.