Lightbrite, the problem is that many people have various talents. IMHO, this is another beracha of increased life expectancy and good health at older ages. people can divide their lives and do different things in the same gilgul. For example, I have a friend whose HS Chemistry teacher had been a cop for twenty years, retired and went back to school. I do not know if he did it but he said that he planned to teach for twenty years, get another pension and do something else.
Huju, Rav Kook said (regarding secular Zionists) that the fact that someone is Hashem’s tool does not depend on his knowledge that he is a tool or even his personal merits. I think one would have to be spiritually blind not to see Hashem’s hand in Trump’s election after being down ten points in the polls a week before. Already Trump has not only reversed Obama’s anti-Israel policy but abandoned the mystical belief in the two-state solution. Let’s wait and see.