I want to sue Aetna for all that they have put me through. What are my options?

I got into a bad car accident last year 3/4/2013. I have a brain injury and I have been out since my accident. I was on short term disability and then got denied long term disability. I got a lawyer that I did not have pay up front, who pushed my case for several months and then finally put in the appeal. I got denied again. I should be on disability. My company Booz Allen thinks I was never disabled. That makes me look horrible. I know I got the wrong lawyer the last time. What can I do? Please assist. Please tell me what my options are. I survived up until this point, but since I got denied again my company terminated me and I lost my medical from Aetna. I have a lot of post concussive symptoms and I am in a lot of pain. Stress makes it ten times worse. I paid a lot of money to Aetna for my insurance and disability insurance and I got denied at the time I really needed them. They also held up the one therapy I was doing until I complained to better business bureau. I want to sue Aetna for all they put me through (stress/going broke/at the point of losing my home and my credit which was excellent is now terrible because I ran out of all my money. I wiped out my IRA/savings to pay my bills and now my one my credit card that was helping me to pay gas and get my medications for my brain injury and pain, decreased my limit by a lot because my credit went bad. I also want to add that I need two surgeries for some major symptoms and they have made it even more difficult for me. They want me to return to work, but I need to get better to do that. I just don’t understand. Why did I pay for LTD if in the time of need I cant get help that I need.