Again...I don't think "learn as much as you can, as well as you can" does, or should, equal working yourself into the ground/compromising your mental health. That is not what I suggest that ANYBODY does - you're arguing against a point I did not make and do not agree with. My comment was directed at the idea that people have the physical, mental, and emotional capacity to work harder/learn more, and choose not to just because they want to do a noncompetitive specialty and don't need a 250 on step 1. I also think that while our health is intrinsically valuable, compromising your health also compromises your learning and your patient care if you are not self-aware and responsive. The question I was responding to was not "should you study so hard you compromise your mental health?" to which my answer is unequivocally no. The question was "do people who do noncompetitive specialties have any less stress because grades are less important," and I think the answer to that is also usually no.
No, I don't think trying to learn as much as I reasonably could in medical school was the trigger of my issues. While I wanted to learn as much as possible for my patients, I never was too worried about grades as long as I was comfortably passing. I wasn't super hard on myself about my below average grades, because I know grades don't always reflect clinical acumen or performance. I'm not a great test taker, but I think today I am a pretty good doctor. Everybody is going to have a different threshold for what they can manage in terms of time, volume, etc. of studying. That is okay, and most of us will turn out to be great doctors, including folks at the bottom of the class academically - they're at the bottom of a group of incredibly hardworking and intelligent people.
Not to get too into the weeds, but I think my anxiety mostly stemmed from social interactions (particularly on clinical rotations) and being a people pleaser. The big issue for me with my physical health was a lack of appropriate help-seeking behavior, but that was mostly related to some specific worries I had about my diseases and treatment options (e.g., I knew if I kept going in with flare ups, the next step was a few months of steroids and escalating to injectable immunosuppressants, and that was terrifying to me at the time).
Edit - several typos, clarity lol