Thinking about your career ambitions doesn't just imply figuring out your basic "five year plan." You've probably been asked several times where you see yourself in five years and that may be enough information for interviewers, but you need to dig deeper when making goals for yourself. Your career considerations should include consistently thinking of ways you could improve; it will help you avoid the boredom that hits when you've been resting on a plateau for some time.
Here are some simple and healthy suggestions for resolutions to make regarding your career this year (on top of your New Year's resolutions, of course!).