It is highly recommended that you use a username and password combination that is secure and easy to rememnber. Here is a decent resource to get you started... I agree with the pass-phrase, password safe and blackbook approaches mentioned in the comments of this article.
http://www.makeuseof.com/tag/how-to-create-strong-password-that-you-can-remember-easily
It is also recommended that you take advantage of the Password Hint feature available in version 1.2.1.7 or greater. This will allow you to display a password hint on the screen if you forget your password.
As a last resort, we have a tumbling password available for you to use to reset your password. Just open a ticket and send us your username. We will send back a reset password that will allow you to change your password. The reset password will expire at the end of the day it was supplied.