I had the same problem when I went to get a job. Only fast food experience. I didn't get the first job I went to. But you know what, I searched google up and down for tips, I sat in front of the mirror practiced answers and tried to emphasize the things I was good at, imagined possible answers and questions. I also looked for answers and questions that the interviews would ask me. I walked in there sweating so freaking much, and I talked so much and smiled so much, I got the job. lol I lost the job because my papers did nor arrive yet, but they are expecting me back as soon as I get my papers. I thought I would never get it though, it was such a sophisticated place, never in a million years, but you know, keep practicing, do not leave it for the last minute, that is what went wrong for me the first time. Practice, practice, because if they are calling you for interviews, there must be something on your resumee they like, just practice to death, imagine every possible scenario. And always emphasize the good things about yourself. Good luck, do not give up, there is something for all of us out there when we want it enough.