Is he happy? By most measurements, yes, he believes he is. However, he has not forgotten the last chorus of Oedipus: Call no man happy until he is dead.
J.M. Coetzee, Disgrace
Mudam-se os tempos, mudam-se as vontades, (...) E, afora este mudar-se cada dia, Outra mudança faz de mor espanto: Que não se muda já como soía.