Looking back, we (incredibly) should have heeded the advice of bad-boy chef Anthony Bourdain, who wrote our epitaph in Kitchen Confidential: "The most dangerous species of owner ... is the one who gets into the business for love."
This in spite of recent conversations here discussing "doing what you love": http://news.ycombinator.com/item?id=449295, http://news.ycombinator.com/item?id=449457
Why didn't doing it for love work for the author? I suppose if I were to answer the question myself, I'd say either a) they didn't love it enough. or b) They did some bad math.
Why not just sell the crossiants for $3? Why not sell the cold house coffee for $3 instead of $1? Raise the price, let your customers keep you alive. If they like what you have to offer, they will.
If their dream was to open a coffee shop, why /not/ work there full time? Why not make it work? Other coffee shops have figured out the formula and do survive. Maybe their owners loved it more?
Every business struggles in the beginning.
Do /not/ give up. Keep going. If your formula isn't working, tweak it. Don't close up shop. That's what you don't do if you love what you do. You don't give up on something you love. You can't.