I do not have enough information to know if you are overreacting or not. The fact that your coworkers find the job stressful might suggest that you are not. It’s also possible that you have underdeveloped coping skills which might explain your reaction.
Quitting your job because you can’t handle the anxiety might only serve to make your anxiety worse. Anxiety that is reinforced typically worsens. As unpleasant as it may be, learning how to endure anxiety will often stop it from worsening and may greatly help to reduce the stress that you feel. Alternatively, it would not be in your best interest to continue working in a job that was stressful and detrimental to your mental health.
If you can find a similar job that is less stressful, it would be a better choice than would be a more stressful and thus more difficult job. You might try speaking with your supervisor. Perhaps they are unaware of how stressful the job can be and could make changes. It might help to ease some of the tension and anxiety.
In order to understand the true nature of the problem, you need an objective assessment. You could get that by consulting a therapist. A therapist will gather information and advise you accordingly.
Generally speaking, anxiety and fear should not be driving factors in your life and you should also not work at a job that makes your life miserable. Beyond those basic guidelines, I cannot provide a definitive answer about how to proceed. Counseling would assist you in making the correct decision. Please take care.
Dr. Kristina Randle