Why do we wait until the beginning of a new year to begin to start over? It seems pretty arbitrary. We could make the same resolution on March 22nd or June 7th. So why wait until January 1st? It's arbitrary.
I think we really wait because it's comfortable to commit to making a change when everyone else does. We can get lost in the shuffle of making resolutions in January and breaking them in March - right along with everyone else. That's fine as long as you're okay with being like the rest of the crowd.
But if you want to stand out - not for the sake of standing out, but because you truly believe in the resolutions that you're making then you should start on the day that you're willing to commit. Maybe that's today. Maybe it'll be two months from now. Whenever it is, start because you're willing to finish.
If you just started today because everyone else did, do yourself a favor and quit tomorrow. It'll save you a lot of time and energy. Energy that you can use to resolve to something of your own, in your own time.