It could be argued that King Nebuchadnezer was always a bit crazy. After all, he expected his wise men to be able to tell him what he dreamt! But eventually, he literally does go crazy after not heeding Daniel's advice after interpreting another dream promising that's what would happen if he did not change.
He didn't listen.
And he went crazy. For 7 years!! But that finally was enough to get his attention.
Tomorrow's Bible In a Year Passage: Daniel 5:1-31, 2 Peter 2:1-22, Psalm 119:113-128, Proverbs 28:19-20