In addition to memorizing your password, write it down and store it in a safe place. This is also worth doing if there’s someone you want to have access to the account immediately if something happens to you (the Inactive Account Manager is also good, but it reasonably has a substantial delay).
Depending on your thread model it might be worth writing it down in a way that simply discovering the piece of paper is not enough to hack you.
Depending on your thread model it might be worth writing it down in a way that simply discovering the piece of paper is not enough to hack you.