PSA: If losing a notebook is going to cause you distress, maintain independent backups.
I just like to send this out into the wild periodically.
It doesn’t matter what app or device you use or if you keep a physical journal. If losing that journal, planner or notebook is going to cause you distress, make sure that you have independent backups. What I mean by independent backups if it’s an app, they usually have automatic backups through some cloud service. That’s great, except that it syncs directly with your app, which means if you lose the documents in your app, you lose the documents in the cloud. That cloud backup only protects you against device failure. It only protects against app failure in certain circumstances.
What I recommend is that you make your own PDF of your document when you change it or when you have significant changes whatever workflow works for you. make sure that you keep your own consistent PDF backups.
If you use a physical notebook take a picture of the pages as you finish them.