Hah, I would say you need to specify the country first. :) For anything that is considered to be a great career in U.S.A. might be utterly rubbish in India. And even more likely, that the high-class profession in Laos won’t even be taken seriously in Britain. That is my first concern about your question.
As for me, if we would, for example, consider European countries, the best profession now would be around politics and peace-making. It was always a hot topic in Europe, with all their European Unions, and so on. No war, only tolerance, and peace to all, but always in a state of some kind of crisis. Maybe, business too, but which one - it is also a good question.
If we consider U.S.A., I guess it would be military or IT. Or a Hollywood actor. Never miss a chance to get acquainted with Jolie, hah.