That can be easily done:
1. Login to your Dashboard.
2. Click on ‘Account’, followed by ‘Settings’ in the menu on the left-hand side.
3. You’ll now see all your personal details on the right of your screen. Scroll to ‘Account’.
4. Submit your new password here.
5. Submit the same password again to confirm the new password.
6. Click on the the green button to save the new password!