To be honest,
@chrisd1 - for me, personally, my best, most robust learnings have involved bumps in the road. Thay way I learn not only what I should do, but also what I shouldn't do.
As an example, my Endo instructed (for a different condition) that I go gluten-free. Trust me, that's a pain, but there we are.
Every now and then I either trip up and have some gluten hidden in something, or I snaffle that really crispy crunchy bit of batter from the end of my OH's battered fish (he rarely has it, as he is very sensitive to fish - what a pair we are!). Both of those events are no followed by a couple of weeks of consequences I'll spare you the details of, but I sure as heck know I need to continue to be gluten-free, and I know if I transgress the consequences last a while.
I doubt there is anyone who arrives here at the beginning of their lifestyle modification journey who doesn't hit a fwew bumps in the road, but by-and-large, that's what they are, and we move on with more knowledge and thereby more power and confidence.