If your happiness depends on what somebody else does, I guess you do have a problem.
Happiness is not pleasure, it is victory.
People take different roads seeking fulfillment and happiness. Just because they're not on your road doesn't mean they've gotten lost.
I would maintain that thanks are the highest form of thought, and that gratitude is happiness doubled by wonder.
Happiness is a perfume you cannot pour on others without getting a few drops on yourself.
A lifetime of happiness! No man alive could bear it; it would be hell on earth.
Happiness makes up in height what it lacks in length.
Happiness is not something for the future. It is something you design for the present.
Happiness is not a station you arrive at, but a manner of travelling.
Trying to be happy by accumulating possessions is like trying to satisfy hunger by taping sandwiches all over your body.