For most people, changing passwords is little bit of a pain in the ass. One of the main reasons for this is that so many people have their favorite passwords, and a fear of not being able to remember the new ones. System administrators always suggest using passwords that will be difficult to guess, which inherently, of course, makes them harder to remember. Additionally, it is a good idea to mix both numbers and letters, and use symbols as well, since by doing so it means there are significantly more combinations that a brute force attack has to go through in order to discover the password.
To help with that,