I wouldn't say I had it go away, but I had it improve to a genuinely livable level. I still knew it was there, it still bothered me in the back of my mind, but I was okay. It took about two years though. I didn't treat myself very well though so that may have contributed. My peace of mind had a lot to do with B-vits. I swear by 'em for HPPD.
I set myself back a long way though. Alcohol can really exacerbate all HPPD symptoms, just saying.