> This need to measure everything is almost pathological.

What's pathological is the tendency to see everything in black or white, right or wrong. There are many different causes for fatigue and tiredness: the flu, atypical depression, chronic fatigue, etc. But those conditions can overlap with depression. Putting the symptoms through a sieve by eliminating some causes helps pinpoint the origin (I over-simplify of course).

edit: this complaint about measuring things is a bit surprising considering what needed to be measured so this article https://christianbonanno.substack.com/p/what-caused-my-menta... (edit: interesting reading btw) could be written ?