History
I once noticed a pattern in my behavior: I was spending a lot of time thinking or worrying about things that ultimately didn't really matter 'in the grand scheme of things.'
So I began to ask myself each time "Do I actually care?"
Later I noticed another pattern: I was also spending a lot of time thinking or worrying about things I didn't have control over.
So I added another question: "Do I have control?"
And thus began an experiment:
Could I categorize all things in life into just four categories, and would it make any real difference?
The simplicity of the idea is what impressed me the most: Figure out what category an item belongs in, then follow the rules of that category.
With determination and persistence I was able to end some habits and start others. It took years. I succeeded. Life improved.
The goal of this site is to effectively communicate this philosophy using few words.
I have invented nothing, this knowledge has existed for ages.