Let me warn you now, don’t make a resolutions list for the New Year, the failure to meet them causing a depressing February (an already-depressing month). Instead, make a calendar entry for what you intend to do on what dates. Then do it at that time on that date.
“Write a book” is an empty resolution. “Write the first half of chapter one on January 10 at 9 am” is a worthwhile, realistic accountability.