Answer:
What starts with the letter “t”, is filled with “t” and ends in “t”?
My first though water cures no thirst my next alone has soul and when he lives upon my first he then is called my whole.
Can not be bought, Can not be sold, Even if it's made of gold. What is it?
I belong to you but others use me more often than you do
My head and tail both equal are my middle slender as a bee. Whether I stand on head or heel Is quite the same to you or me. But if my head should be cut off the matter's true though passing strange directly I to nothing change.
No matter how little or how much you use me, you change me every month.