You are his successor, yet you have not humble yourself - Daniel 5:22
Belshazzar, refused to learn from his grandfather's mistake
Nebuchadnezzar long refused to bow before the Lord
God humbled him by cause him to live like a wild animal
Belshazzar dishonored God when he brought out gold cups from the temple for a drunken, idol-worshiping party
Daniel explained to him, hos days as king had come to an end - Daniel 25:30
It does not help to dwell in the past, but it is a good biblical idea to learn from it.
What lessons from the past jump out at you?