At T6 you should be able to drive yourself with hand controls. Are you setting this as a goal for yourself, along with moving into your own place eventually? If you are an adult, your father should not be determining what activities you participate in; you might do better with a different caregiver until you can learn to take care of yourself.
I know several RNs who work full-time nursing jobs...clinical nurse specialists, nurse practitioners, nurse educators, patient educators, case managers, and even a couple of staff nurses, with both thoracic and cervical spinal cord injuries. Working towards getting back to work could give you some purpose in your life. Have you met with a vocational rehabilitation counselor and set goals for this?? Here is an organization that may be of assistance to you as well: http://www.exceptionalnurse.com/
Again, I would strongly encourage you to get some counseling with a cognitive behavioral therapist who can help you try to get your life back and set realistic goals for yourself.
(KLD)