I SOOOOOOO completely understand. I went to a group for parents with kids with autism and the T said impatiently to me, "so you went to bed and woke up as someone else"... Like GET ON WITH IT.
It's been 3years since my breakdown and I' m slowly getting my sense of humor back...of course that was the fist thing to go.
I hate to say it , but I just had to suffer for some time. Meds took forever to figure out plus major family tragedies made my recovery longer I think.
Hang in there. Who you are has not changed (unless you want it to) it's just covered up by your mental illness right now. You'll get yourself back!