I don't do New Year's resolutions anymore. I have a journal somewhere, from many years ago, with a list of 50 things I wanted to accomplish in that year. My perpetual personal improvement project. Every so often I go looking for that list to see if I've done any more of them. Mostly I look at the things listed and shake my head. All those years when who I was wasn't enough. Ever.
If there's anything worth changing it would be that kind of thinking. Now, that's a difficult thing.