Question: What do you think is the most difficult job in the world ?

Re: Question: What do you think is the most difficult job in the world ?

I think you’re trying to get at “effectiveness” rather than “efficiency”. I would argue that most of us try to be “efficient” in our work, but not all are as effective as the likes of Jobs or Branson. They are examples of effective!
Efficiency = Doing things right.
Effectiveness = Doing the right things.

and I agree, being effective is significantly harder than being efficient.