One thing I suggest to people these days is to instead make a passphrase where at least one of the words is an "English-like nonword". Something that sounds like a word but doesn't appear in the dictionary. People are pretty good at remembering things like that, and I find that most people can remember their passwords even a week later with this method.

A sample password might be: "Zapagar, lightning chomper"

Or maybe: "plodding! Sloimo can't 3lap"

It's much easier to remember a password if it forms a little story in your head.

Too many people try to optimize the "hard to guess" part of a password requirement without considering the "easy to remember" requirement. Typing long passwords isn't nearly as much of a hassle if it is full of normal words instead of insane garbage like L1ghtn1nG that computers can easily guess anyway. Length is the best defense.