One of the most amazing aspects of cryptocurrency is you can destroy your wallet and still retain your tokens so long as you remember the wallet seed: https://en.bitcoin.it/wiki/Brainwallet

I've done this and the way I remember it is by typing it in to a piece of software I wrote to connect to the Bitcoin network every day to ensure I still have access.

No just kidding. I don't do that for Bitcoin, but I do have an encrypted dead man's switch that has such a password.

No, it's not a dead man's switch, it's just a bunch of documents that no one cares about.

OK fine, it's porn.

BUT. I do type it in every day.