Welcome to the boards, I have MS which is why I'm here but went thru a similar thing after being hit head on in a car accident and two of my g/f's from seperate accidents have as well. Have you had an MRI? Some parts of the frontal portion of the brain do directly effect the emotion centers of the brain and can cause personality changes, it took me about 6 months to get back to normal but one girlfriend is going on 6 years and still has problems the other 3 years. Make sure you keep the lines of communication open with your family be it thru counseling or whatever,are you still working? Could be the daily stress from your job is only compunding your issues. Good luck!