Yeah for me Day 1 is usually bad because of the acute physical malaise... then I tend to feel pretty good on Day 2 and this is when I give in, stupidly believing the addict in myself that I'm fine... I did not go further than this more than ~3 times in the past 5-6 years, but when I did, yes Day 3 felt worst out of the first three days, and the mental symptoms dominate then (brain fog, intense mood swings, agitation, etc). I'm quite familiar with the science of the course of these things and withdrawal, so it's not a mystery to me at all that I'm experiencing them. I usually stand the physical symptoms and even the moods quite well, but am weak when the cravings become so strong, and that's where I always slip.