Two kinds of people struggle with lying, being lied to and lying: men and women. We all are trying out best to construct a reality that pleases us, that we feel safe in, and that gives us enough hope to get up and live another day.
There are lots of kinds of lies. Some are slippery. It is not easy to clearly define. Denial is a form of lying, even though it seems less toxic, it can be deadly. It is an interesting topic. It is something every human being westles with, and its complicated. Only God knows perfect Truth. We can only do our best to sort our within the complexities of being human how to process the world, our feelings/thoughts. Good question!
People lie, it's a survival mechanism