Let's call personal development all the techniques or technology used to measure and enhance one's quality of life.
Quality of life optimization can be done multi-scale:
There are many similarities between day-to-day productivity and more life designing, namely, both gave the goal of maximizing the return of time invested.
Note: I feel "productivity" is not the right word here, but I cannot come up with a better one. The core idea is being able to use one's time as efficiently as possible to get the greatest return possible from it. It's not constrained to work productivity.Many productivity authors provide both the principles they follow and their methods at the same time. I prefer to treat both problems separately, namely, we need to devise
It's probably easier to tackle specific areas of life optimization. Some areas are:
You can start reading the principles: here.