Eumoirous

[Dianne]

[Happiness] due to being honest. A nice [word that] makes you feel happy when you say it and [think about it] because its a good thing.

[Guest]

Webster's unabridged: happy or fortunate from the goodness of one's inclinations and actions.
also stated as: happy or elated over the goodness of one's own thoughts and actions

(cannot be found in modern dictionaries)