There are "tried and true" ways for people to improve the quality of their life. Such information is generally available through personal development self-help books. However, until now, the information was spread over many books and often was very specialized.
Your Own Devices contains considerable practical and logical knowledge from past and present thinkers. The knowledge is in an "operations manual" format. If humans were born with an instruction manual to explain the influence that they can exert over themselves, others and their place in the world, it might look like Your Own...