2.
You should stay in your job
You actually have it pretty good at your job. Yeah, everyone hates their jobs sometimes, and you might hate your job a lot of of the time, but it seems like there are definitely more reasons to keep your job than to quit. Maybe you just need a job change within your company.... a promotion could be in the near future for you? Or maybe it's a step down you need, there's nothing wrong with that.
Write down all the things you like and don't like about your job. With the things you like, try to focus on those more often. It will make you feel better about your day. With the things you don't like, see if there is anything you can do to fix them, or at least a few of them. There might be some simple solutions to most of your problems. Also check out this article 7 Ways to Get Through the Day When You Hate Your Job. for some more tips.