Happy... now scared. Were you all sure this is the right choice?

Tuition is freaking me out. I got accepted to my top school and looking at the tuition alone for the next 3 years is giving me anxiety. I knew this would be the case but I also am someone who is debt free, and I live in a high cost of living area. I make >200k right now as a bedside nurse in the bay area and while I hear its going to be worth it... I'm scared. tuition alone is going to be close to 190k. I have around 100K saved up but still I know thats not enough. I try very hard to be financially responsible, I guess I just want to know that someone out there knows how I am feeling right now and you came out on the other side just fine?