I damaged all the complicated bits of the brain to do with processing and emotional control. I was prey to every single emotion that swept over me and I couldn't deal with it. I had to re-learn things from scratch.
Be thou incapable of change in that which is right, and men will rely upon thee. Establish unto thyself principles of action; and see that thou ever act according to them. First know that thy principles are just, and then be thou.