During this time of resolution making, why not focus on committing to treating your physical body, and soul better? But, here's the catch; it is super easy to say you'll go to the gym. There hardest part is showing up. The follow through.
Resolutions aren't built on the deciding of a new path, they're forged by walking down that new path. Over and over. So ignore the resolution hype, instead just decide to take action. To take actions to build a better you. Let me quote a master of committing to new principals when I say, "Do. Or do not. There is no try."