THE PRINCIPLE OF SUFFICIENCY
"ENOUGH IS ENOUGH!!!!"
Being edited, but there is already great value and a reading/learning sequence for you to digest and integrate it into your life.
"Good enough" is a similar idea to "sufficiency", but it is not meant as a pejorative judgment in this case. It just means done to a sufficient level to get satisfactory results and that doing more might not really be needed. More than "good enough" must be questioned as to the value derived from the extra effort. Read The 80% Approach - "Good Enough" and follow it for a huge gain in productivity (it is different than the 80/20 Rule).
Read the pieces in the sidebar, as a reading/learning sequence.
THE DIFFICULTIES IN IMPLEMENTING THIS
Learn "sufficiently" "enough" to be effectively operable at the basic level first, in all key areas of life, so that you have a foundation with no big weaknesses. (Do not try to overdevelop in any area at this point.)
Then and only then you can go further in the order of which you think produces the highest return for your efforts.
The key areas are:
Effective thinking (and how the brain works)
Energy and health.
How to be happy
Sufficent skills to earn good money for your time, at the "enough" level plus.
Enter each in the site's search engine and follow the programs or reading sequences.
Of course, it will pay to learn how best to learn and planning, which actually is attached near the end to productivity management learning.