If you ask Ben (of Andreessen Horowitz) how well he slept when he was CEO of his company, he’d say: “I slept like a baby. I woke up every 2 hours and cried.” You get the point: running a company is hard. Very hard. This book gives a realistic view of the ups and downs of startups. It will teach you why hiring great product managers is essential, how to train and develop people and how to build a sustainable culture (hint: it has nothing to do with paid lunches, yoga classes or pilates at work). This book will make you feel normal again. I read it 3 times, last year alone.