From what I have seen, it seems that the pessimistic person is likely to stay depressed even despite unexpected positive outcomes. It's easy for them to dismiss

From what I have seen, it seems that the pessimistic person is likely to stay depressed even despite unexpected positive outcomes. It's easy for them to dismiss good things as a fluke. Meamwhile a truly optimistic person can rationalize any event as being for the best somehow and stay positive even if something negative happens unexpectedly.