Congratulations!
Looks like you and @clarissalittler are both making the point that beeminding grad school will help you find out sooner if it should be aborted. I agree! Although in my case, I guess unusually, I had so much fun in grad school (both what I worked on and the whole lifestyle) that I stretched it out as long as possible. There were super intense periods but I guess I thrive on that. Averaging over the whole 7 years I feel like I had excellent work-life balance then.
Also good point that obsessive time-tracking – or more generally, collecting rich data about oneself – is really valuable.
A couple other reactions to @clarissalittler’s awesome response:
Your 3rd case reminds me of this thread on beeminding with depression:
And in case you missed it, I wrote about ego depletion. [UPDATE: fixed link]