One system admin I knew was into trivia. He liked to use passwords that reminded him of things. Such as 56HDW63 being the years rein of some famous person.
Something I do (Im also a system admin) is keep lists. But even my lists, or password manager programs, dont actually list the password itself. On some sites involving giving them an account of credit card it will say "money" which is NOT the password but only a reminder that I used my really hard to figure out money password there. On other sites that I happen across and am not sure I will ever come back to.it will say "password" which is NOT the password but will tell me I used my junky default password there. No offense but this site was one of those and I was real surprised that I was able to login.

ANY storage list of passwords is still keeping a list where it can be snagged from you. I would recommend using this trick to remind yourself without actually writing the password.
OH and on those security questions, I have complete sets of answers that I use which do not match my real answers.