Since the majority of my personal documents are digital, I simply put them in folders that make sense. I encrypt with VeraCrypt. There are some paper documents

Since the majority of my personal documents are digital, I simply put them in folders that make sense. I encrypt with VeraCrypt. There are some paper documents that I do not bother to digitize. I keep these in a small filing cabinet in actual physical folders. The trick is simply memorizing which documents go into which folders.