Noah Kagan was the 30th employee at Facebook, the fourth employee at mint.com, and has started many successful businesses of his own. Now, his company AppSumo has nearly $100 million in annual revenue. Along the way, he says he discovered something: Success isn't about long-term dreams; it is about immediate action. His new book Million dollar weekend lays out a plan for just that. He explains.

People often say they want to start a business, but they don't have an idea.

I think the ideas are stupid.