My concern is that am a fresh graduate and I landed my first corporate job, I've been working there for a month now but I feel so lost, the amount of work am giving is not so much, but all the information in it is all new, and before I am able to grasp one file I am handed another one at the second, talked to my boss yesterday and she said it's okay maybe they shouldn't have exposed me to too much in the beginning but it's okay, she also said we have so much hope in you that you can learn but from my perspective I don't really see any progress and every file is even more confusing than the other, they expect me to preform great because they have that idea of me in their heads but I just can't keep up this fast.

I thought about quitting because am feeling very disappointed in myself and my performance and I haven't been sleeping well worrying about the job.

What should I do?