What am I doing here

Art is often one of my biggest frustrations. When things don't seem to be coming out right,none of my ideas seem new and I just feel plain stupid, I just stop and think, what am I doing here? I get so frustrated because everyones life seems to be going so smooth and carefree ( know thats not true). Their lives are with out worry, and they say it is because they have God or that it just comes naturally. I know I have God too, but I can't say that my life is worry and care free. I know my purpose is to Glorify God no matter what, but there are days where it just rains and it seems Im a bother and in everybody's way.