Navigate to MMA's sign-in page at https://my.meritamerica.org/learner_accounts/sign_in
Click "Forgot your password?", under the Password input box
Input your MMA account email address and click "send me reset password instructions"
Look for an email called "Reset your Merit America account password"
If you can't find it in your inbox, make sure to check your spam and trash folders!
Click the "change my password" link in the email
Input a new password and confirm.
