The first step is to login to your client area through this link: Client Login If you do not remember your client area password please use the "Request a Password Reset" on that page.
Once logged in go to "My Services" under the "Services" menu.
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Once there click on "View Details" for the cPanel account you want to manage.
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You are now viewing the details of your service. Click on the "Change Password" tab.
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This page will allow you to change your cPanel password. Once you have entered a strong password click on "Save Changes"
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Congratulations! You have changed the cPanel password for your hosting account.