Speaking of using good passwords, they most definitely may not be as easy to remember as less secure passwords. How about trying some software to store your passwords. KeePass Password Safe is an open source and free program to do just that.
You can put all your passwords in one database, which is locked with one master key or a key file. So you only have to remember one single master password or select the key file to unlock the whole database. The databases are encrypted using the best and most secure encryption algorithms currently known (AES and Twofish).
Features include:
Strong Security
Multiple User Keys
Portable and No Installation Required
Export To TXT, HTML, XML and CSV Files
Easy Database Transfer
Support of Password Groups
Time Fields and Entry Attachments
Auto-Type, Global Auto-Type Hot Key and Drag&Drop
Intuitive and Secure Clipboard Handling
Searching and Sorting
Multi-Language Support
Strong Random Password Generator
Plugin Architecture
Open Source!