If you don't know your current password, go to the iThemes Member Panel login page. There you will see a Reset Password section where you can enter your iThemes username or the email address associated with your iThemes account.
Shortly after clicking the Reset Password button, you will receive an email with a link to reset your password.
The link to reset your password is only good for 30 minutes, so be sure to reset your password as soon as you receive the email.
If you have your password and need to reset it, you can use the Reset Password option on the Login page or you can reset it through your Profile page.