Quite complicated - but an interesting analysis. I see that this overlaps (or even is?) neuro-linguistic programming.

However, it seems to go even broader than simply converting your mental programming from saying "i must go to work" to "i want to go to work". The way I read this article is: - Optimism: The bad parts of my life are temporary. (implying that the good parts are the way it should be). - Pessimism: The good parts of my life are temporary. (implying that the bad parts are the way it should be)