I work 6 days a week 8 or sometimes 11 hours a day making fucking sausages (not the shitty kind, i'm talking about 90% meat and 25$ a kilo) or selling them and when i'm not working i play videogames, spend time with my girlfriend or i'm out drinking with my buddies. To sum it all up i keep my self occupied as much as i can so i think less of hppd.
So it's not impossible to do anything, my hppd is really bad like heavy visual snow, afterimages from hell and static objects float around however they please etc. The only symtoms i lack would be the psychosomatic ones such as dp/dr. I conquered that through cognitive behaviour therapy and physical activities.
Stay strong and virtual hugs to all of you.