I did the same thing recently, excluding quotes from books. Every other note, How To, and To Do gone. It provided tremendous relief. The vast majority of the stuff may as well have been written by a complete stranger. But, again, I kept my book quotes and notes as that is something I reference regularly. I guess the main thing was the realization that I literally don’t access 90% of my notes and they were of no value other than making me feel something about myself.