“When we assume that our suffering is stable and permanent, or when we have been suffering for a long time, we begin to engage in what psychologists call black-and-white, or all-or-nothing, thinking. This means we perceive the world through a dualistic eye, seeing things and situations as either all good or all bad. This type of thinking can easily lead you to generalize about your future based on how you feel now. The assumption is that life stinks and it won’t get better, and the resulting emotion is, understandably, depression.”