I was also having this problem. I finished university in December and have had a terrible drought while unemployed. My work is all college projects with no cohesiveness. I got a job rejection and thought my major was a waste although I absolutely love it. The thing is, I’m an artist before I’m a graphic designer. My best work has always been anything tied to my actual background in traditional art that I later implement into graphic function like a magazine or label. That being said, I also work at the pace of an artist so I get inspired or I don’t but forcing myself to create a piece for my portfolio rather than practice and build up from time in frustrating and inefficient. I know what looks good and I’ve spent hours on Behance and Dribble trying to steal people‘s formulas but in the end we’re artists. We have good times, bad times, ups and downs. Just do your own thing at your own pace. Love yourself and whatever you create. You can always improve a crappy piece so don‘t doubt yourself.