What do you mean by “heart”?

My heart is the place inside me where I am deeply happy, not because of anything but happiness itself. There are oceans inside my heart which I sail, not to go anywhere but because it’s such an incredible voyage. The heart is where we develop the courage to seek clarity in the midst of confusion and where we can enjoy clarity for itself. I am in heaven when my heart is content, when it sings with gratitude for its existence. That’s when I really feel alive.