Hey, first time poster. Maybe this is a bit out there, but throughout the song, they talk about writing songs and writing books. And you write on paper, which comes from trees. Thus, the tree is the start, the inspiration. So when someone is cutting a tree for him, I think she (or he) is providing the band the inspiration. And yeah, everything else is about now appreciating what they provided.
I think. Maybe it's a X-mas song about cutting down christmas trees.