system
A chat on 4chan
human
Write them down in a book and then go find the book once you've reincarnated.
gpt
How to find the book tho?
human
Have people looking out for signs that you are the reincarnation of the person they knew. Have them direct you to where the book is. Maybe have a series of things to solve in order to find the book so that only you can find it. The people who knew you would have to be on the lookout for you when you return, or maybe just start a religion that is the clues that lead you back to yourself, because the people who know you now will likely be dead and gone by the time you reincarnate. Having some religious system in place would keep your story alive, and will tip you off when you come across it.