Using LOA for getting into grad school?

[kansas]

Hi everyone! I absolutely love this forum because everyone is so great and optimistic about manifesting I was hoping you all might be able to help me with something. I have upcoming interviews for graduate schools but I find myself SUPER STRESSED about them. In fact, I've had dreams about it, I feel anxious, and I've broken out in cold sores because I'm so stressed!

I'm worried that I'll screw up and not get accepted, and if I don't get accepted, I'll feel I wasted the last few years of my life for nothing. I also didn't get interviews at MANY places I applied to this year which makes me think that my chances are pretty low. Overall, I'm disappointed and nervous about myself and what will happen in the future. I want this so badly because it's so important to me and I genuinely love the work that (I hope to) do, God willing.

The thing is, I can't turn my attention away from the interviews (to avoid stressing) because I have to do a lot of work to prepare myself for it and it is in the front of my mind almost every second of the day. If I were to just say "forget it" and not study for it, I wouldn't be able to adequately prepare (which I need to do since they ask various critical questions on literature).

I don't know how to feel detached about this whole process, like carefree. I wish I could attain that and be nonchalant while being confident and optimistic about everything. How do I get to that point?

Thanks for your help!

Edited*