As far as the other nations of the world are concerned, there are certain things which restrict their free will and compel them to act in a particular way. With a Jew, however, no matter what he does, be it to travel to a particular place, or whatever, there is always some devotion involved, something which relates to his service of God. The profit a person can have from this world is indescribable. You don't need to spend your own money to make a profit here. God spreads the opportunities before you and you can simply stretch out your hand and take abundant profit.
Fear is the key to achieving spiritual perfection.
The basis of fear of Heaven is to be afraid of being punished. Even Tzaddikim need to have this fear. If you want to serve God, you must keep on making new beginnings. Whatever you see in this world exists only to create the possibility of free will. There are people who serve God for a whole lifetime without being shown what they have achieved.