Ryan's guide to determining whether your password is secure:
1) Did you pick it yourself? If yes, it is not secure.
2) Is it unique? If no, it is not secure.
3) Is it part of a "password system"? If yes, it is not secure.
4) Is created using a deterministic password generator? If yes, it's part of a "password system" and therefore not secure.
5) Did your password manager randomly generate it for you? If yes, it's probably fine.
6) Did you generate it with dice? If yes, it's probably fine.
7) Did you create your password in some other way? It's probably fucked.
Please rate my method of creating passwords:
I have a paperback book and use the first 12 characters of the first line at the top of the page including punctuation followed by the page number. I just use the next page every time I need a new password.