Unless you want it to be, that is.
The story you're telling by the life you're living will have conflict, rejection, fear, and disappointment. But the story doesn't have to end there. The great stories don't. The failure part of those stories is merely the setting of the stage for what's to come.
Take a look at these people who were rejected. For them, failure wasn't the end of the story. In fact, for many of them, failure was but the first act in an incredible tale of who they became.
The choice, then, is yours. When failure enters your story (and he will enter), where will you place him? And what will come after?