How do you know whether you are living according to the will of God? ( Saint Silouan the Athonite )

How do you know whether you are living according to the will of God?

Here is a sign: if you long for some thing, then you have not submitted to the will of God, even though you may think that you live according to His will. Whoever lives according to the will of God does not concern himself with anything. And if he needs some thing, then he submits himself and that thing to God; and if he does not receive it, then he remains content as though he had received it. 

The soul which has submitted to the will of God, fears nothing: neither storm nor bandits; nothing. And whatever should happen, it says, "It is God’s will." If the body is ill, the soul thinks, "Then I am in need of this illness, otherwise God would not have given it to me." And so the body and the soul remain at peace.

Saint Silouan the Athonite