Use a password manager keychain like Apple, Google or OnePassword.

Use a different, randomly generated, password for every website. You should only customize and memorize one password: the one to your keychain. Do not reuse or share this password anywhere with anyone. Any form of digitization or saving of this password should be considered a major security risk.

In exchange, compromising of your randomly generated password is negligible, as you can immediately sign back in and change to a new randomly generated password.

Logging in with Open Authintication (partner logins) are secure as your password is never shared with the service, but you cannot customize your email using email tags before it is shared with the partner.