What is the hard thing about hard things? That they don't have a formula, says Ben Horowitz.
"Hard things are hard because there are no easy answers or recipes," he writes. "They are hard because your emotions are at odds with your logic. They are hard because you don’t know the answer and you cannot ask for help without showing weakness."
Horowitz, now one of the most sought-after investors in the game, used to be CEO of software management company Opsware before it was acquired by HP for $1.6 billion.
Bonus: Horowitz shows off his ridiculously extensive knowledge of rap lyrics — quoting Kanye West and DMX before the close of the opening chapter.
Disclosure: Marc Andreessen, co-founder of Andreessen Horowitz, is an investor in Business Insider.