Why is being a emt difficult?

You have to know what everything on the ambulance is and how to use it. You get taught much more than first aid and need to remember it all. Add to that the fact that you could be holding a patient's life in your hands. When you lose a patient, it can haunt you long after the call is over. Besides, there's the stress of never knowing when the next call is coming or what it'll be. You don't have the luxury of planning. You could be just sitting down to eat when you get toned out. You could be on duty late at night when you get dispatched for a motor vehicle crash with 5 patients. You just never know what you'll get.