This book sounds very good. I'll order it.

Have you read the book "Scarcity"? It had a life-altering effect on me. The authors first illustrate the ways in which poor people make terrible economic decisions (spending it all in the first few days of getting a pay check, for example). Then they show how people who are always short of time -- poverty of time -- make similar irrational decisions with their scarce resource, time.

Once you are assured of a certain financial level, one needs to optimise for time.