Attending in Emergency Department(AED)

Recently felt very tired after duty and cannot focus on paper work nor research work.
It's seemed to be due to aging (now 43) and both energy and power are not enough.
Besides when you work as an attending physician, your loading may not be increased but your responsibility is increased a lot. You have to keep control of all colleagues in ER include residents and nurses and sometimes intern/clerk. Sometimes disbute or problem is not medical nor surgical but administrative . You have to make the final decision because you are the highest rank on scene. Leadership training is needed for attending physician in ER.
My personal opinion is ER working is best for young physician (age 20-40) due to young age capable of night shift and stress work loading. Above 40 should decreased on duty days or shift to administrative work like chief of department. On the other hand, not everyone suitiable for the department chief. You should have some kind of power and leadership so that everyone listens to you. It's not an easy thing at all.