Try to find paralegal lessons that will aid you in your attempts to advance and get better at the profession that you are already working in. In many cases you can get help from materials that you can get from the bookstore if you are willing to spend the time and effort.
Trying to take paralegal lessons while you are working full time may be a little more than you can actually handle while you are working. You may need to look into using a tutor to help you with your studies as they will be able to explain the material differently that your instructor.