Excerpt:
Every entrepreneur has experienced what Ben Horowitz terms "the struggle." That's when things are going really, really badly. It's when, as he puts it in "The Hard Thing About Hard Things," "people ask you why you don't quit and you don't know the answer." But there always is a way, Mr. Horowitz believes, and it's the ability to spot the next move during the struggle that separates winners and losers.
Mr. Horowitz has authority on this subject. He was a successful tech CEO, having co-founded the pioneering cloud-computing company LoudCloud and subsequently overseen its evolution into a software firm, Opsware. He's also one half of the venture-capital firm Andreessen Horowitz. Among the firm's winning bets: Facebook, Skype and Twitter. And he's a former Marxist to boot. Sort of ...