A small but simple resolution to save some money. Deplete content before buying new stuff.
I have found over the last few years that my library of unplayed Steam games, unread Kindle books, unwatched DVD's is growing more and more. When new stuff comes out I would generally buy and play, leaving the older stuff waiting.
Resolution is to use wish lists instead for new stuff, and deplete all the old stuff before buying new things. Those new things will also probably be cheaper at that point.