Oh I hear you, when I look back and see the things I was hoping to accomplish, and how some things would be unachievable but I thought I could do it. Oh yes, it sucks when you feel all this and then fizzle out and still have to finish what you took on.
Oh, I wish I had an ounce of that "energy" again.
But for now, I'll settle for just plain old fashioned energy, I worked too hard to get to this point.
Keep the faith.