I've just about cured myself of (a) keeping any bit of paper with spare space on it, and (b) thinking of butter as a luxury. Result of an immediate post-war childhood when these items were a bit short, to say the least.
Ridiculous collecting of piles of junk is a common symptom of OCD. I have OCD and overpowering urges to do that kind of thing, but fortunately I have it more under control these days - although my collection of old Tube tickets amazes all who are fortunate enough to gaze upon it. I think the secret is a sort of displacement - if I focus on collecting a single kind of crap, I can throw away things like receipts or old cinema tickets with relative ease.