Digging deep

Today is one with little left in the tank
Yesterday took it all too far
Each time it’s all left on the floor more and more time is needed
Is this the sign of how long I’ve got left
Or perhaps it’s something else
If they asked I’d do it all again
And again, and again, and, again
Summoning up all that remains
Going beyond what is conceivably left and thought possible
One last burst of glorious flame
Then finally it’ll all be over