On the British reality show "Dragons' Den," Sarah Lu had two well-known mentors competing to invest more than $100,000 in her startup, but the real world has been harder on her dreams. Her YoudooDolls sold 15,000 units at Christmas, but orders from big national chains fell through and many of her 150 small retail accounts are cutting back. To make matters worse, her profit margins are sinking along with the British pound. The "really stubborn" entrepreneur has taken on part-time work while she tries to make a go of her business. "I always think if I give it another year or two it will work," Lu says.

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