I solved my similar disorder by jettisoning EVERYTHING that I don't use for real life, real world events. No "fun" guns, no "collection" guns, no "just in case" stack of 50 mags. Likelihood of use doesn't justify the time and energy wasted on amassing shit I will never use. Since then I've narrowed down to 1 SBR AR-15 that I actually take with me nearly everywhere I go, my Glock 17 that I do take everywhere I go and use at work, a backup pistol, and a 12ga shotgun. No more need for a safe, all mags are loaded and placed either in a plate carrier or in my EDC bag, vehicles, etc. It was quite the relief, and if anything made me 10x more proficient with what I really use. I've narrowed everything down to 3 calibers. The only thing I might do is build another AR identical in every way to my primary, just to have a redundant copy. The only that this makes me worry about, is having only one has forced me to handle that one everyday to move it from home to vehicle, to bag, etc., Sort of forces familiarity.

I'm gonna get blasted for saying that, but I used to be one of the guys that thought I needed a bolt gun for long range, an SBR, a 20" inch AR for intermediate ranges, a battle rifle, a pistol caliber carbine, etc, etc, etc. Too much BS. At a certain point it all just becomes comfort items and a "hobby", dangerous turf if you ask me.