Jobs

Job hunting is so depressing. Many of the listings says that they require at least 2 or more years of experience. There goes 80% of potential jobs. When I find a suitable job listing and send in my cover letter with resume, 90% of the time I get no response. On top of that, there aren't many listings of what I have studied for. At least I got a job right now with decent pay but I don't enjoy it at all. I enjoyed what I studied and I would love to work at what I learned at school but this is going no where. Should I keep looking or maybe go back to school? God please help me.