Should I quit?

Should I quit? I recently accepted a job at a call center thinking I could manage since my stutter is mild. After 10 days of training today they asked me to answer a call and my heart dropped. Since starting I always contemplated quitting but today it truly hit me. I thought this would be a good challenge but this is like a fish trying to clime a tree. Should I just quit and save myself from this torture? Edit: I quit today. The stress and anxiety outweighed the benefit of the job. I don’t want to sleep and wake up in constant anxiety for 4$/hour.