The advice used to be not to write down your password and also to change them regularly. This kind of forced people into using weak passwords. It's better to have a crazy complex password and have it printed out and kept somewhere safe. The risk of being compromised electronically is way higher than someone finding a piece of paper stuffed in a draw in your house.
Yes, that's why companies who enforce every 30 days password changes often are compromised by attackers trying variations of "20.deC16" (unless December2016 gets past the password checker software, which means the checker is so pathetically weak that it's a security flaw in its own right). Just be sure to hide the paper well, so the Cubicle Cops don't find it and write you up for a violation. Though if you work for the military-industrial complex or a "three letter agency", you better follow their rules, no matter how silly they seem, or else!