I don't make resolutions, never have. When I realise I need to change something about my self(which is pretty often) I start right away.
I never tell anyone what I am working on fixing either. If or when I backslide I don't need more than myself beating up on me to get back to
correcting the problem.
I know losing weight is one of the hardest things to do, I admire anyone who can attack that problem and keep at it.
Good luck,
Chris