An amusing memoir by a still-young comic. “Yes, please!” is her recommended answer to just about everything, and she is not wrong. Some of this book is pep talk for the not-quite-young, assurance that forty isn’t the end of the world or even the end of sex. A lot of it is worrying about work and kids. None of this is exceptional, though if you like Poehler it may sound better coming from her. The account of trying to get by as a scrounging actor in a pick-up Chicago improv company, on the other hand, is terrific and it’s something you can’t find everywhere. It’s a hard slog, learning to be funny.