Synthesized answer
The provided passages do not contain enough information to explain the key concepts of "Instructions for Practical Living (Chuanxi Lu)" in my own words. The title and translation information are present [1], but the actual content of the book, which would outline its key concepts, is missing. Therefore, I cannot answer the question about explaining the key concepts.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: Instructions for Practical Living, and Other Neo-Confucian Writings by Wang Yang-ming. Translated with Notes by Wing-tsit Chan by Shou-jên Wang Pages: 358