The institution of marriage is struggling. This book reverse engineers the best marriages - from the 'traditional' to the utterly non-traditional - showing how any marriage can be better. Ultimately, this much-needed book delivers practical advice for immediate action as well as long-term strategies: seven 'love hacks' that take little time or reflection; four categories of how to channel greater levels of effort; and three ways of recalibrating the marriage so expectations match reality - and happiness can flourish.