I will never understand why people wait until the start of the New Year to 'decide' to 'change'. Why don't you want to do whatever it is, all year long? Why at the start of the year, and by the following month, the motivation has vanished in several instances?
Change won't take place until two things are identified and answered honestly:
1. Why haven't I been doing this before now? In other words, you need to identify the barrier(s).
2. Why do I feel the need to do this now?
If you can answer honestly and overcome the barriers, you will have a chance to succeed, to change, to grow, to improve.
My only resolution is to never give up...all year long!