Happiness: Filling the Void

What makes us happy?

I've seen an interesting theory on happiness recently.

Someone said that all human beings have a void inside of us. We need to fill this void, and if we don't, our sense of purpose and our sense of meaning will atrophy. We fill it with work, we fill it with family, we fill it with music, we fill it with causes, we fill it work consumerism, and all kinds of other things, both tangible and intangible.

Some people say it's a bad thing that we have this void, but I disagree. I believe that our void motivates us. As a common proverb says, hunger is often the best seasoning.

What makes each of you happy? Do you believe that this "void" theory makes any sense? How do you fill your void?

Thanks for sharing your opinions.