My friend Charlie O'Donnell writes a weekly newsletter for tech that I highly recommend subscribing to. An issue from a few week's ago told the story of a man who wanted to buy a restaurant. A very specific restaurant that was not, as it happens, for sale. When he finally persuaded the owner to sell it to him the offer was insane. As he agonized over what to do his girlfriend told him "Buy it with your heart and then run it with your head."