Question regarding a repeated experience of sudden clarity after the first 4 weeks not drinking

I'm sober for a little more than a year now, but had to quit multiple times before I came this far.

An odd thing I noticed was a "clearness of mind" every time after about a month. Like some kind of fog fading away, pretty suddenly, and noticeably – you wake up one day and think "well, this is different. I'm kinda feeling good today". The first time I got there was a kind of mental checkpoint for me; where "I have to stop drinking" transformed into "I don't want to drink. This is much better."

Has anyone here experienced the same? I ask this because it was not a vague "I feel better", it was a really noticeable sudden shift in my whole experience, and it always took about 4 weeks without any alcohol. Like, over night, something was "gone", some bad part was missing. I couldn't put my finger on it but I knew something was there, and now it's gone.

Like, you didn't notice you watched your videos in 720p and finally switch to 1080p. Kinda. It's difficult to describe :D