Confusion

I will soon graduate from my college. I have ever often thought it's exciting when I can find of the excitement in finding a job. But However, now I feel very nervous, because I can't don't know what is waiting for me. I don't know what
I should do and or how to seek search for a good job. What's worse, I don't know what kind of work I should do in the future! I feel I haven't study studied enough or gained enough knowledge to work. My head is full of confusion.