The Frustration of Will

Epictetus postulated that it is desirable to will whatever occurs; in this way one's will is never frustrated.Is this a plausible position? Is it possible for a Stoic to live a human life, or merely "the life of a stone"?

I prefer Nietsche's "That which does not kill me makes me stronger." Fatalism of any kind is not reasonable. The corollary is that we must welcome the frustration of our will to do anything that really matters.