I've thought about it and I am  going to walk out of my job tell my boss to go eff himself.
What are you reasons for wanting to quit your job?
My boss is terrible and I don't get paid enough.
It's reasonable for your to quit a job that you don't like and that isn't well-paying. If you don't like your boss and don't feel respected in your job, then leaving is perfectly acceptable.
Yeah, I'm just having second thoughts.
The decision is yours to make, but if you're able to quit and it's what you choose to do then it's perfectly acceptable. You might not want to tell your boss off in the process as you might need a recommendation one day, but making yourself miserable at your job isn't good.