The Collaborative International Dictionary of English v.0.48:
Eudemonist \Eu*de"mon*ist\, Eudaemonist \Eu*d[ae]"mon*ist\, n. One who believes in eudemonism. [1913 Webster] I am too much of a eud[ae]monist; I hanker too much after a state of happiness both for myself and others. --De Quincey. Eudemonistic