If all that sounds like too much, there are always third-party tools to help, such as LastPass, 1Password, Roboform, eWallet, SplashID, or KeePass.
You can also set up two-step authentication with Google or Facebook. Some websites allow you to sign through Google or Facebook, using them as a sort of master key, so two-step authentication will add an extra layer of security.
But most importantly, don't use the kind of password an idiot would have on his luggage (thank you, Mel Brooks!).
