My anxiety

I will step into society ,but I think what I prepare for my future is so little.you can think that I do not get through CET6. I always think I study a little at school.most of what I learn is theoretic.Maybe what i have learned matters nothing.who kowns.I can go to library every day. I can stay dormitory and play computer games for relaxion. I really do not know what the society looks like.But I know some day i will step into this society.The streess is near to me.sometimes I don't know what I will do. I want to get some suggestion.