2 Chronicles 26:16
"But when he was strong, his heart was lifted up to his destruction: for he transgressed against the LORD his God, and went into the temple of the LORD to burn incense upon the altar of incense."
King Uzziah struggled with the same thing many people still struggle with today and that is allowing their perceived success destroy them. It says in the verse above, "But when he was strong, his heart was lifted up to his destruction..."