The addiction of stress is very recognisable. I believe every human suffers from it
to some extent.
The desire for stress is a very typical characteristic of the Ego and it's painbody.
I mean off course the buddhistic definition, where "Ego" means a false self image that
has a dominant nature and feeds on Drama, Stress, Pain. It always makes the mind over-
active and stirs up alot of negative emotions. It has general destructive tendencies,
towards the self and towards others. This in order to stir up as much drama and pain
to feed on. The Ego, this false image, can only persist to exist and have power over
you if it can continuously create drama and feed on it.
In that you are not alone and it is infact mankinds' greatest weakness.
The first step in breaking free from destructive, egoic patterns that
yearn for chaos and misery is to deny carrying out it's will.
It will tempt you, harrass you, possibly torture you to tempt you to
cause harm, but you'll have to be firm and unmovable. First it will
be hard, maybe even seemingly impossible. But it will get gradually
easier over time.
Whatever behaviour you feel urged to express, allways scruitenise that
urge and find it's deeper, true intentions with your Awareness, the
brighter half of yourself. It will immediately recognise the true
intention that lies behind the urge. That realisation will make
dismissing urges, that turn out to be "unclean" much easier.
About Addiction to happiness; I suppose you could generally call that
"Desire" and ironically too much Desire for happyness(in whatever form
you may seek it) is likely to become a huge object to achieving exactly
that happiness. Desire is another favourite of the Ego, as too
much, unrealistic desires are a garuantee for suffering; a feast for
the Ego. It is paradoxical, but to achieve something, you must not
want it too much. The trick is to want it just the right amount,
because being completely indifferent would make you catatonic &
apathic.
Keeping the balance between caring too much and caring too little
is a very fine art.