Before you quit and walk away remember, the bills do not get paid with no money coming in. If you are unhappy and do not like the job any more there no amount of time will ever change that, you will start to resent your fellow employees and your bosses and the company.
My suggestion for the short term is talk to your supervisor or manager and ask to be moved to a different job or department doing something different, and state why.
you might also ask for some time off, you might not get paid for any time off if you have no vacation time or what ever but you take but at least you will have a chance to take a break and start pounding the pavement looking for a new job that might suit better.
But If your independently wealthy and have a spare Billion or so kicking around your pockets and you are just working for something to do, I could use a spare million. I not so proud I would gladly accept a gift!
Good Luck