Work will win when wishy washy wishing won t.
Thinking is the hardest work anyone can do, which is probably the reason why we have so few thinkers.
Choose a field that will supply sufficient remuneration to provide adequately for your companion and your children. I bear testimony that these criteria are very important in choosing your life's work.
I counseled many returning missionaries. I interviewed 1,700 missionaries all over the world. My advice to them is that you should study and prepare for your life's work in a field that you enjoy.