How many usernames and passwords do you have? Email, PACER, electronic filing, bank accounts, and the list keeps going. For example, I have more than 50 different website's username/password combinations stored on my phone, and there are surely sites that I never bothered keeping track of. Recently, I was asked how I keep all of them organized.
One way to do it would be to just use the same username and password for everything I do and never change it. Of course, that would be about the least secure thing to do. If someone got your password for your email account, they would then also have access to your bank accounts and who knows what else.
Instead, I try to have a different username and password for everything. To keep track of them all, I use a free, open source program called Password Safe.
One of the great things about Password Safe is that it stores all of your files locally in an encrypted file. To open the file, you only have to remember one master password. It will automatically generate new passwords for you, alert you if your passwords are too weak, and even remind you to change your passwords on a regular schedule if you like. It even remembers prior passwords so that you don't accidentally reuse one.
They also have Android and iPhone versions so that you will always have your passwords with you wherever you go. You also have the option of storing your encrypted password file in the cloud for Android with another app.
So, if you're still using the same password you have been using for the past 15 years, update your passwords and use Password Safe to keep it all organized.