Click the link "Forgot Password" on the Account Login page.

You will be asked to enter your email address. 
Be sure to use the original email you registered with.

If your username exists, a reset link will be sent to your email.
Be sure to check you junk folder if you think you did not receive the link.

Open the email and follow instructions using the link to "Reset Password".

Enter your Password

Retype your password to Confirm your Password

Then click "Reset"

Your password should now be reset and you can continue with your login using the new password.