need advice about my job

OK my job is really stressing me out and im seriously debating just quiting and getting an easier one. The problem is that I make some serious cash with the one that I am at right now. Plus the fact that I have been there almost 2 years is not making my decision any easier. Ok heres what I do. I work for a spring water company and I am a delivery driver. I deliver to downtown Harrisburg to all the state office buildings. I have to drive to Harrisburg everyday whichis like a 45 minute drive and carry these 5 gallon bottles up to these inconciderate state employees (if you have ever met anyone that is employed by the state of Pennsylvania you would agree they are morons). Thats all i do and I make 50K a year. Is it worth all the hassle or should I just tell them to F off. Opinions