Happiness
I wish I could define this simple nine-letter-word without thinking... But it's kind of hard for me nowadays to express what happiness really means. It's kind of weird to think a person in her midlife is running out of reasons to live her life to the fullest. It's very selfish of her not considering her family especially her children as her whole definition of happiness, isn't she? So easy for us to judge a person sometimes without knowing the whole story. Well, maybe because we are human. We are not perfect. Whatever may be the person is experiencing, we should learn to respect, to be fair. Life is simple if we choose to live it that way. Well, what is happiness then? It depends on you, on how you live your life.
You have really said it all. To me, happiness is defined as "how many people have you raised from dust to hall of fame". It is not how many cars, house, businesses etc you owned.