Because a primary concern of our material brain-mind is survival, events that threaten either physical or psychological safety, security or survival, stick like velcro.
Because positive experiences don’t have immediate value for the survival concerns of our brain, positive experiences tend to roll off our brain/mind as if it were teflon.
This is one description of the reason for a natural negative brain bias. If we are to enjoy a life that is not ruled by this brain/mind bias and the ways this darkens our mind-space, we have to both honor and directly address this tendency.
