Feeling drained from work

I have a job that requires me to prioritize my focus every minute due to multiple demands at once. I am constantly making decisions on what to do and how to react to a situation. The phones ring throughout the day and I can not keep up with all the calls. This leaves me feeling drained at the end of the day. During the day I have to feel the emotion and do the job anyway but I’ve got stuck on the thought that I don’t want to do this anymore. I’m not sure if the constant demands of the job or my thinking is making me feel drained at night.

My usual routine at home is to head straight to the kitchen and buffer with high sugar foods to find some relief from the stress buildup during the day. I don’t want to sit with the feeling because it feels like more work I have to do on top of an already demanding day. I also noticed food is the only way I unwind at the end of the day. Is it only my thought that I don’t like this job that’s causing this burnout or being in a demanding job lead to it? What’s the difference?