I agree, arguing and proselytizing doesn't get far and it's not really something thats works in the long run. The only way people will change is if their minds are fitted toward it.
Eudaemonia/the humane life should be actively participated in. And it takes living each day through your actions to achieve this.
Along with Aristotle, Epicurus also believed in human flourishing which for him was like you say internalizing pleasure(happiness). For him Ataraxia, being the state of freedom from distress and worry was what a life of Eudaemonia brought.