If your startup fails to meet growth projections, many consultants will tell you to focus on big, strategic accounts to pump up your numbers. But business guru Guy Kawasaki disagrees, because small accounts can turn into big ones, and small successes build confidence. "Get any kind of sale you can. ... Beggars can't be choosers," he writes. It's one of four tips Kawasaki offers for startups that fail to take off as expected.