Re: "in a safe place"
Sort of been there and done that.
I use eWallet as a password manager.
For a couple of years I used it exclusively on my phone (instead of the desktop version which asks for a password every time), unlocking it with my fingerprint.
After an update it wouldn't let me unlock with a fingerprint and started asking me for the master password again, which I couldn't remember (it's 16 characters of nonsense).
It took me a couple of weeks of daily bum-clenching horror that I couldn't remember it, thinking of all the grief it would cause, until (well lubricated on a Friday night) the password hint phrase - Embiggen not TizWoz - I'd set finally made sense