I'm NEVER going to graduate!

I was just looking at how many classes I have left to take before I graduate...25! At the rate I'm going it will take me THREE MORE YEARS! I guess I'm on the ten year plan. I feel like I'm doing all this work and getting nowhere!
I'm super stressed right now too. I have four tests next week, three of which are going to be hard. I have a zoology lecture and lab practical, an ethics test, and a chemistry test. Someone shoot me!