In essence we can simply think life is, or isn’t good – usually based on experiences (or innate anxiety as one cannot be happy feeling fear) – now ultimately, the most important thing we must convince ourselves is, that we are lucky / fortunate / blessed; in other words life is great (for all evil really results from those who feel resentful, hence become jealous of those who don’t, hence do whatever they can to make them too feel resentful.)