Better than decide or determine what *to do* (or to do more of this year), better to think of deciding what you don’t want to do this year, what you want to do less of this year, and what you want to remove or subtract from your life.
For example, my New Years resolution this year is to *NOT* complain. Instead of complaining, better to address the problem … try to be innovative to figure out ways to fix it, or experiment with new modes of doing things, changing up my lifestyle/and-or approach, or trying to be more clever in terms of best changing things to my fullest advantage.