Our bodies biologically exist to be most efficient for survival. Our brains create schema- or mental frameworks based on our lived experience- to most efficiently process new things and fuel our thoughts and actions. If you’ve been fired in the past over a small mistake, your brain may create anxiety around every mistake at your next job. If you’ve been cheated on while a partner was distant, your brain may overanalyze your next partner’s presence in your relationship. Schemas are helpful when we need to survive, like when our brain shortcuts to avoid a dish that's fresh from the oven, but life is not always as simple as that.