I have been reading two good books,
"Essentialism: The Disciplined Pursuit of Less" is an excellent book for doing less but accomplishing more. Instead of saying yes and being available all the time constantly checking calls and emails, it is time to prioritize the important things in life. As the book clearly shows that if we do not prioritize, someone else will prioritize for us.
The other book is not about the disciplined pursuit of less, but ending the pursuit of happiness. This is a very grounded book on practice and reality. Zen or Advaita or any real practice should change our outlook such we have to leave everything just as it is and accept things for what they are. It’s really very simple, but it is extremely hard for us to keep it simple and to let it stay simple.