Must Reinvent L.♥.v.e

I used to rule the world
Seas would rise when
I gave the word
Now in the morning
I sweep alone
Sweep the streets
I used to own
I used to roll the dice
Feel the fear in my enemy's eyes
Listen as the crowd would sing:
"Now the old king is dead! Long live the king!" One minute I held the key
Next the walls were closed on me
And I discovered that my castles stand Upon pillars of sand, pillars of sand