What a great question! For me, bad days on adderall were definitely the worst. I remember feeling like I couldn't breath, my heart actually had shooting pains, I was afraid to go outside but sometimes felt like I should just in case I had an emergency and at least people would be around to help me. What kind of craziness is that? Also- I swear I was becoming dumber.
Bad days in recovery include lack interest, apathy, and eating more than I'd like- but I have to take ownership of those feelings and behaviors. Living an authentic life today is more important and feels better to me, even though it sometimes isn't easy.