I wish I knew what to say to make you feel better. I don't know how good it is, but whenever I feel that bad, I try to sleep as much as possible. Your spelling problems are interesting because I went through a time like that too. My e-mails to T were barely readable. And, I don't know if your driving is really impaired or you were just being overly criticized, but I did experience difficulties there too. One day, I just couldn't stay out of the right-hand ditch even though I kept telling myself to get on the road - weird. But, both have come back, if that's any consolation at all.
I feel so bad for you. Hang in there.