Why is New Years so special? If you want to accomplish something, might as well do it whenever.

Yep. I've got an original 3D puzzle-platformer game that I started with a friend for our senior project that we still want to finish and release as an Indie. I've got a novel that I wrote several chapters of that has been sitting mostly unwritten in my head for years. I've got a board game design, and even components, that needs to be fleshed out and playtested. I've got ambitions of learning Unity, Android programming, music composing. And beneath it all... the JJ2 levels I never finished, the episode I never completed, always sitting there... always waiting. It's so easy to start a new project, but why is it so difficult to commit to finishing something?