Ooh, I love this teaching shared by the Velveteen Rabbi:
Once there were a big wave and a little wave in the middle of the ocean. The big wave was crying, and the little wave asked why. "If you could see what I can see," the big wave said, "You'd know that ahead of us are rocks. We're going to crash on the rocks and die!" The little wave offered to teach the big wave something that would remove his fear, and first the big wave asked if it would cost anything, or if he would be required to chant a bunch of mantras and stand on his head, but the little wave said no and that in fact it was only six words. So the big wave said, "Sure, teach me." And the little wave said: you're not a wave, you're water.