ROFL...
I know where you're coming from.
I picked up a nifty little program called PasswordVault a few years ago. (Its gone up in price since...) Basically all I have to remember is one password. That gets me into the program where I can enter info for other passwords. The info is encrypted so even if someone gets the data file, they can't do anything with it.
With online brokerage accounts, bank accounts, emails accounts, LANs, Steam, EFTPS accounts for payroll tax payments, and on and on and on, its really handy. For each account you have you can enter a username, a pw (or have it generate one), answers to challenge questions, etc.....what ever you can think of. If I can't remember the username or pw for a website or bank account or email acccount, all I have to do is fire this small program up, enter one pw and voila. And it allows you to copy and paste the username and the PW to the website you're visiting. So you can have some really cryptic PW's and usernames if need be.
At my age, I can't live without it!