The primitive part of our brain wants us to remain safe and comfortable at all costs. It is programmed to alert us to impending danger. Our brains our adapted to the time when we lived in caves and had to be careful of occasional tigers or other animals eating us. However, our brains haven't necessarily caught up to modern times where our brain interprets a lot of things and situations as dangerous, even if it's truly not. Your brain starts to interpret everything as the "dangerous tiger": your boss, your difficult coworker, traffic, deadlines, kids, schedules, or starting anything new. Anything new or unfamiliar causes a warning sign in the brain to alert us. The brain starts telling us to stop and other lies in an earnest attempt to keep us safe.
The problem is that the definition of growth is discomfort. In order to reach our dreams, we must be willing to be uncomfortable. This means in order for us to continue to grow and change and evolve as we are naturally meant to do on this human journey, we have to override our primal brain's tendencies and develop our frontal lobe to intercept these self-sabatoging messages. Imposter syndrome shows up as a limiting belief that has us convinced that we are a phony, fake, not good enough, too old, not enough education, etc. It is one way our brain attempts to self-sabatoge us in something we want to do or say or be. I explain more about it here.
