How Do I Stick To My New Years Resolution?

Every year I seem to set myself up for failure. I make New Years Resolutions every year and of course after about a month I'm slipping back into my old ways. It never fails and then I feel even worse because I couldn't keep my resolutions!

I can't decide whether to make New Years Resolutions this year. Should I even bother? If I do make them, then how to do I stick to them?