i finally figured out that the reason my personality is somewhat changed since the accident is my frontal lobe is the part of my brain that was most severely damaged.
"The frontal lobes are considered our emotional control center and home to our personality. There is no other part of the brain where lesions can cause such a wide variety of symptoms. The frontal lobes are involved in motor function, problem solving, spontaneity, memory, language, initiation, judgment, impulse control, and social and sexual behavior."
source.
it's rather interesting that science can pinpoint all of my symptoms down to a specific part of my brain.