"Four Thousand Weeks: Time Management for Mortals" is a 2021 non-fiction book by British author Oliver Burkeman. The book falls under the genre of self-help and philosophy. Burkeman challenges the conventional approach to time management, arguing that the average human lifespan, roughly four thousand weeks, is "absurdly, terrifyingly, insultingly short". Instead of offering productivity hacks, the book explores how to construct a meaningful life by embracing the limitations of time. It encourages readers to focus on what truly matters and to accept that they cannot do everything.
Burkeman draws on insights from philosophers, psychologists, and spiritual teachers to present a humorous and practical guide to time and its management. He introduces tools for embracing finitude and challenges the modern obsession with "getting everything done". The book is divided into two parts, "Choosing to Live" and "Beyond Control", with an appendix offering ten suggestions for living according to a "limit-embracing philosophy". "Four Thousand Weeks" became a New York Times bestseller and was listed as one of Time Magazine's "100 Must-Read Books of 2021". The book has 304 pages. As of February 2026, there are no film or TV adaptations of the book.