"How to Fail at Everything and Still Win Big" by Scott Adams. I have purchased and disliked every book he's released since then, but I found quite a bit of use

"How to Fail at Everything and Still Win Big" by Scott Adams. I have purchased and disliked every book he's released since then, but I found quite a bit of useful, actionable life advice in that book. I can honestly say that the book changed the way I look at life and made me a more positive and ambitious person. This one was right when he was just on the edge of being overly impressed with himself, so the lessons include more humility and less lecturing. His later books still have useful material but the delivery and underlying smugness is jarring. In short, it's a book you can get a lot from without liking or agreeing with Scott Adams on most of his public opinions.