What is Happiness?

So I was trying to come up with something positive and uplifting to post for my sister. She needs all the sunshiney smiles we can send her way right now. Needless to say, that got me to thinking: What is happiness? I have always had a firm definition of what my own personal happiness means, but here is a few quotes on how other people define happiness. Find mine at the bottom of the list.

*Happiness is when what you think, what you say, and what you do are in harmony. - Gandhi

*Happiness is that state of consciousness which proceeds from the achievement of one’s values. -Ayn Rand

*Happiness is something that you are and it comes from the way you think. - Wayne Dyer

*Happiness is essentially a state of going somewhere, wholeheartedly, one-directionally, without regret or reservation. - William H. Sheldon

*Happiness is not a reward - it is a consequence. - Robert Ingersoll

*Happiness is different from pleasure. Happiness has something to do with struggling and enduring and accomplishing. - George Sheehan

*Happiness is the meaning and the purpose of life, the whole aim and end of human existence. - Aristotle

*Happiness is not something you experience, it’s something you remember. - Oscar Levant

*Happiness is not a station you arrive at, but a manner of traveling. - Margaret Lee Runbeck

*Happiness is the spiritual experience of living every minute with love, grace and gratitude. - Denis Waitley

*Even if happiness forgets you a little bit, never completely forget about it. - Jacques Prévert

*If you want to be happy, be. - Leo Tolstoy

*Happiness is never stopping to think if you are. - Palmer Sondreal

All in all, I would say that happiness is a choice. Your happiness is your decision to make. All the quotes above require actions on our part and actions require choices. So what do you think? How do you define happiness?