Luke 22 : 31

And the Lord said, "Simon, Simon! Indeed, Satan has asked for you, that he may sift you as wheat. But I have prayed for you, that your faith should not fail; and when you have returned to Me, strengthen your brethren."
As a leader, Satan attacked Peter. But Jesus prayed for Peter, not to be left alone, but for unfailing faith. You may have failed some battles, but victory is ours