"School Grades"

I feel frustrated. I have been very busy during these passed weeks. I have been busy with school work and some family responsibilities. I know that this is not a major issue, but I feel that I have a lot to accomplish in a short amount of time. I have had not enough time to sleep and have meals. I know I have good time management skills, but sometimes I get frustrated and end up leaving my duties for the next day. I am already in the seventh week of the semester (almost half a semester) and I feel like I have not done my best job yet.
So far I am satisfy with the grades I have in two of my classes, math and English, but not with the grades I have on my other two classes, sociology and psychology. I am not surprised that I have an A plus (100%) in my pre-calculus class since math has always been my favorite subject. What makes me happy and is a surprise for me is that I believe I have an A in my English class. This makes me happy because, even though that class is supper hard for me when writing essays and responds to readings, I still have a good grade. But what disappoints me a little bit is that sociology is a fun and easy subject but I have a C on it. Most of it is common sense, but I missed a couple of points on an assignment and that brought my grade sown to a C. On the other hand, I am struggling with my psychology class because everything I am learning is new to me.