I cried on my first day at a new job, should i go back?

I just had training for a new job in a call centre today. I have no previous experience in this field. I basically broke down in tears near the end of my shift because of stress from failure (i didn't get any sales made and everyone else managed at least one). I misunderstood my boss and thought he expected at least 4 sales from the first day, but he meant the first week. He gave me the opportunity to give it another shot tomorrow, but explained that some people just aren't ruthless enough for that kinda job. This is only a summer job till i go to uni, and i don't wanna be stressing over the idea of losing a temp job anyways, but i need the money. Should i go back tomorrow to try again or not bother? Cheers for any advice.