One of the most common startup myths in Silicon Valley is that you need a product-focused founder to succeed.
Facebook has Mark Zuckerberg, Twitter has Jack Dorsey, and Dropbox has Drew Houston.
But Yahoo cofounder Jerry Yang, who has an engineering background, doesn't believe in the idea. He thinks it's more important to find your strengths, whether its sales or people skills, and double down on it.
Image: YouTube/Stanford Yahoo cofounder Jerry Yang