Job Searching

I am currently a member of six internet job listing websites and yet I still don't have a job. I got asked in for an interview once and got turned down because I wasn't eighteen, I was told that I wasn't right for the job my second interview where they were supposed to tell me my work schedule. Times are tough, but President Obama is bringing in jobs and I have yet to obtain one. I might need to look at the way I answer the questions in the questionnaire, that could be what's destroying my chances, but then again it could be that i've been at the same high school for four years and have yet to participate in any extracurricular activites other than my praise dancing for my church. I tried going to a joblink center to get help with getting a job and took job oppurtunities for the youth listing there, but I don't have a job. A boy in my third block has a job and he's not even capable of completing a classwork assignment in a GROUP! But he has a job at the mall, I don't unerstand what's wrong with my credentials or my resume that makes me look bad enough to not even achieve a interview. I went from looking at grocery stores to retail to fast food and yet I still get turned down. Am I upset? H#LL YES! Am I trying hard enough? H#LL YES! Will I decide to keep trying or give up on finding a job? I WILL KEEP TRYING.