Four Levels of Happiness – Is That All?

Comment: 

In a conversation recently with friends and relatives about the way some people prefer to wallow in bad feeling, nurture or harbour a grudge, rather than make some effort to get to the root of a problem(s) and reconcile with perceived enemies, one of our number suggested that such people are invariably unhappy in their lives;  he went on to ask for my opinion on the above video, where the speaker describes four levels of happiness. I have to confess that I’ve not had time to view the video but it looks interesting, so share your thoughts.  Are you, like me, surprised that there are only four levels of happiness?