If you aren't totally against the idea of staying with your employer, and it's just the job that is taking its toll, could you move to another department in the bank that is back office or operations? I couldn't be a teller for the life of me (I can't do sales), but I'm successfully working in the back office in mutual funds. Most of my customers are internal - they themselves have to deal with the clients. I just check on things and do calculations and such. But plenty of people I know here have started in those teller positions and because they started in that position with the company, they had a better chance of getting this position versus someone applying from outside with no experience with the company. You'd have a good chance.