Leaves

I love the theme and the ideas expressed. They form a wonderful image. I think some of the expression is a bit wordy: "leech out of" instead of "leech from"; "all that has passed before my eyes / throughout the years of my life" instead of "I've seen throughout my years"; "each spring of my life" instead of "each spring". In short, great idea, great images, and I think the order of exposition is good. It just needs some paring down.

Also, you might consider "Leaves" for a title, though the current title works.

Alcuin