There's a California gold rush story that tells of two brothers who sold all they had and went prospecting for gold. They discovered a vein of the shining ore, staked a claim, and proceeded to get down to the serious business of getting the gold ore of the mine. All went well at first, but then a strange thing happened. The vein of gold disappeared! They had come to the end of the rainbow, and the pot of gold was no longer there. The brothers continued to pick away, but without success. Finally, they gave up in disgust. They sold their equipment and claim rights for a few hundred dollars, and took the train back home. Now the man who bought the claim hired an engineer to examine the rock strata of the mine. The engineer advised him to continue digging in the same spot where the former owners had left off. And three feet deeper, the new owner struck gold. A little more persistence and the two brothers would have been millionaires themselves. There is gold in you, too. Do you need to dig three feet farther?