In order to save you time, the Client Area contains the ability to view your username and change your password to access cPanel. To get there, follow these steps:
Log into the client area
Click on "Services" on the navigation bar, then click "My Services".
Click "View Details" then "Change Password".
Here you will find all the information you need regarding your cPanel account details. When you're done, click the "Information" tab and click "Login to cPanel".