Every day at work feels like a final exam

Felt this way at the beginning too but did the following and things got way better:

1. Mentality shift: you need to make the conscious effort to acknowledge that work flow is never ending. As an analyst, you are paid to do menial tasks, sometimes to no avail and noticeable effect. Becoming "numb" but good at what you need to do is actually a good place to be. 
2. Communication: be vocal about your workload when appropriate and clearly communicate with staffer to bypass fake deadlines and gauge the "real" ones. You will get better at this as time goes on.
3. "Show off" your accomplishments: definitely not in an obnoxious and bragging way, but you do need to let people around you know what you've done and how it translate to moving the deal process forward. This builds your political capital, which sometimes gives you some leeway/benefit of the doubt in the eyes of others.

I'd say #1 above helped me the most and reduced many panic-induced errors. Find something you enjoy doing outside of work (tbh does not need to be 100% healthy) and use that to indulge and recharge when you are burnt out. It's a grind but do know someone always has it way worse.