I wonder why I'm even here at the doctor's office.
Why do you think you are here at the doctor's office?
I don't know. I'm considering quitting this job since I hate my boss. I think it is time to get a new one.
If you really hate your job it may be best to start looking around. I would not quit until you were confident you have a new job.
Maybe you are right.
You do not have to be stuck somewhere unhappily. I wish you luck in finding a better job.