A health moment I regret...
Easy - when I didn't stand up and make my doctors take care of me when I was 16. My hair fell out, I was winded brushing my hair and rather than force the issue I stopped taking my medication. Cold turkey.
It was the start of 5 years of my life where I felt bad, not terrible, but bad every day of my life. I caught every cold, flu, stomach bug and otherwise infection I could. I gained weight no matter how little I ate. I worked out to no avail.
I stayed miserable until I got my first job.
And as much as I regret it, it helped me become who I am and allowed me to help others NOT make the same mistakes.
I regret it, but I'm not sad about it.