I agree with the good advice here. I'll give you a quick review of what happened to me. Worked as an admin for a really great corporate VP lawyer. He retired, they replaced him with an "outsider". This guy was an egomaniac and (in my opinion and many others) a sociopath. He was cheating on his wife and expected me to cover for him. He was also making sexually suggestive remarks to me. I was much older than him so I know he wasn't "interested", he was just trying to make me uncomfortable. He told me a terrible story about something he did to somebody (and it was a true story, as I did a little research). I started printing out e-mails and documenting things, talked with HR and with our HR attorney (who reported to him.....so figured out the hard way that she was not my "friend"). My HR rep kept a written record of my complaints. Things got so bad emotionally for me that I had to take a medical leave. Long story short, my HR rep left the company, I did visit a couple of different lawyers (all they wanted to know was if he "touched" me). Learned that lawyers don't like suing other lawyers. Was informed by HR that there was no record of my complaints. I ended up letting my disability run out, and never returning to a job I once loved at the age of 52.
A few words of advice. I agree with all that said to take the emotions OUT of the situation. Looking back now, I'm really annoyed with myself for letting him "win". But at the time, my health was suffering, I was extremely depressed, the commute was a nightmare. I was making a really great salary and was building up an impressive 401K and pension. My situation was different, though. My husband had a good job with benefits, so there was no issue about health insurance. My 401k and pension was protected. And as it turned out, we had one family health issue after another and the task of elder care and caring for a couple of other extended family members fell on me since I wasn't "working". No way I could have done that while working full time, so in the end it worked out for us.
I would send HR an email listing the things you spoke about and asking them to verify what was discussed (or ask your lawyer if you should). Get up every morning and take some time to think about the positive things regarding your situation. Try to stick it out. I would not quit unless and until you have discussed the situation at length with your lawyer. You cut off too many options that way. Be pleasant to your new boss and co-workers. DO NOT discuss your plans, complaints, etc. to anyone you work with. DO NOT use your work computer to do anything personal (facebook, twitter, shopping, discussion forums). Do your work as if you loved every minute of it. I like the Mantra idea...Each hour that goes by is an hour closer to reach your own retirement goal.
Believe me, I know exactly what you are going through. I'm glad you have a lawyer and are being proactive about your situation. Sorry this is so long....looking back I believe I made a mistake by not sticking it out, but like you, at the time I thought I was going to have a breakdown. Oh, and they did finally terminate him....but it took them many years. Kind of hard to get rid of a lawyer.
Good luck to you.