Bip39. Before everything you'll want to keep it SEPARATELY from the seed. Owning your seed and your passphrase in a similar locale defeats the purpose of having a passphrase to start with. And you need to have published it down when you were being hoping to help keep an option https://bookmarkzap.com/story18559838/bip39-wallet-https-linktr-ee-bip39-the-fact-about-bip39-words-that-no-one-is-suggesting