Use the "forgot password" link, and send yourself an email, or text, whichever way you have it set up, to reset the password.
Once you reset it, presto, you're back in!
Afterward, write down your password, or use somehting like LastPass, or similar, just don't store the password with your phone or similar.
*If this (or another post in this thread) fixes your problem/issue, please mark it as solved, and I'll tag it, to make it easier for others to find the answer(s). Thanks.