It takes confidence to launch your own business, but overconfidence can be a recipe for failure. That's why Alexa von Tobel warns not to get too caught up in your own success. People were clearly excited about the business, and von Tobel knew she'd "hit [on] something" with the idea. As a first-time entrepreneur, von Tobel didn't get carried away with her company's early success. Making sure you retain some "healthy paranoia" doesn't mean you have to live in constant fear of failure, von Tobel notes, or be afraid of celebrating wins, in order to be successful.

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Persons: Alexa von Tobel, LearnVest, von Tobel, she'd, didn't, von Tobel didn't, Warren Buffett Organizations: CNBC, Northwestern Mutual Locations: Harvard