>That attitude may lead to more risk taking, but it will also be a constant source of unhappiness.
Not necessarily. It may be a source of unhappiness, but it may just be a calibration effect. Consider the question, "on a scale of 1-10, how happy are you?" I know 1 == sad (not me) and I know 10=="a marijuana forest full of strippers?!?". But what does 5 or 8 mean?
Say I'm the sort of person who might rate myself a 9. But If there is a person, real or hypothetical, who is "happier" than me (1), but not quite a 10. So that leads me to conclude HE must be 9 and I must be 8. But I'm not less happy, I just don't know how to answer a "how happy are you" question.
Similarly, I might want to rate myself a 5, but then I think about how I wasn't eaten by velociraptors, and jack myself up to 7 (my understanding is that something of this nature occurs in Denmark).
(1) His beer comes from further away than my beer and his wife's ass is higher up than my wife's ass.