Locked Out Of Twitter Account Can't Remember Email Address

Unfortunately, you have to have an e-mail address in order to log in or reset a password. I would recommend accessing any e-mail accounts that you currently use and looking through to see which one you have received any Twitter e-mails from (for updates, who to follow, etc.). If you can't find any of those, you will have to create a new account. If you're creating the new account and it tells you "E-mail already in use" or something along those lines, you'll know it was that e-mail address. Hope this helps!