So why does our brain tend to focus on the negative? One reason is that negative experiences and emotions are processed more deeply and thoroughly than positive ones. The amygdala, a part of the brain that is responsible for emotional processing, is highly sensitive to negative stimuli, and it can quickly activate the fight-or-flight response, which prepares us to deal with potential threats. In contrast, positive experiences and emotions are processed more superficially and require more cognitive effort to activate. This means that even if positive experiences are just as common as negative ones, they may not be as salient in our minds. Another reason for the negativity bias is that negative information is more memorable than positive information. This is known as the "negativity effect," and it means that negative experiences and information are more likely to be stored in long-term memory than positive ones.