Nuguy, your advice is reasonable. Crackpot is not. He needs a "technique" to help him thru this.
CP, if you can afford all that "whimsy" buying, you can afford a personal storage space for awhile. You need to get it all out of your sight first. Then as as Nuguy suggests, put together a nice system from your inventory and even (dare I say it!) a few new purchases if necessary to create a really "synergistic" system.
Then photograph and pack up the remaining stuff, a little every weekend, and sell it. It's very important to do this last part not at home!! You want your "system" in one place, and your "inventory" somewhere else. I've been through this (not quite as extensively as you) but I'm serious about the solution -- I know where from I speak!
The good news is once you finally un-bury yourself, you will unlikely ever let it happen again!!