Worst job ever:(

Hey guys, so right now money is tight and I'm scheduled to start my college classes soon. But until then I decided I needed a job ASAP and settled for the first one I could find, which was McDonald's. So I work 40 hours a week on cash register. All the customers are very rude, I've been cussed it a few times today. All my coworkers are rude and mean to me. I'm trying to have a positive additude but I guess I'm looking for someone to give me advice on how to get through this?