My thinking on this is that unhappiness is broadly classified as "what will happen" (WWH). What will happen if I can't pay rent, what will happen to my kids if I die, what will happen if I can't make the deadlines and so on. Its a thousand of these that we deal with every second - some are trivial for us and we can manage them. Some are significant for us and they cause unhappiness. Some are recurring, some are one-time (but can have large impact). I don't have a solution - just speaking from personal feelings about this.
