The author’s key argument is that money earned in exchange for time is not wealth (as in a job). The only way to earn wealth and get rich is to remove time from the equation (as in business or investment)
The central idea of the book is that to follow through on a good habit one only needs to be 1% better every time.
For distraction-free (deep) work, there exists an optimum number of working hours that is not too large or too small.
I cannot stop but wonder that last year around the same time I stood here not in serenity but fraught with anxiety.
The practice of performing potentially wasteful activities in a deliberate, structured way during off-work hours or weekends for fulfillment and productivity.