Most people don't like change. It's not in our nature, more specifically it's not in our neurochemistry, because the brain is a habit machine. Here's how it works. Our life experiences create beliefs and emotions which create neural networks in the brain. These networks create a baseline or comfort zone that sets up our bodies neurochemistry. This baseline is maintained in feedback loops in our the neural networks through current experiences, thoughts, feelings and emotions. Both internal and external inputs contribute to maintain and reinforce these patterns through repetition.