This is so recognizable! Not just the part of don’t following your own advice, but also the whole thing about throwing things away. I had this addiction a long time. It was always the thought of the possible, unexpected need of the item I wouldn’t dare to throw away.
Since a couple of weeks I made a new sport of it and I enjoy it every Tuesday, what means that it is garbage day in my suburban area. On Monday night I usually going through the basement and the rest of my house to look for things that are not needed anymore. Everything I did not use in a long time is sentenced to been thrown away. Sometimes it’s not easy to let things go, but I master it better week by week.
I am glad that my keep-this-for-the-case-of-addiction was much less cheaper than the transport of your huge amount of literature.

Till we meet!
Mario