To start, use your email ID and password to log in to your BellSouth email account.
Then choose the option of My Account from the drop-down menu.
Choose the option of change password.
When the box appears, enter your old password.
Then enter your new password, making care to include both digits and alphabets for added security.
Confirm your new password by typing it in again. Check that you have entered that the new password is secure.
Enter the button of Done.