I read Edutopia's HAPPINESS post and thought I'd offer one as well...
Hope and keeping a positive attitude
Appreciation for the good and bad
Perspective other than one's own
Persistence to the bitter end
Identity that is in constant flux
Never-ending love of the pursuit
Empathy for one's ego network
Sharing successes and failures with others
Why not create your own acrostic from H A P P I N E S S.