Resolutions tend to be to vague and open-ended. "I resolve to lose weight" is always among the top resolutions each year. But what does it tell you? How will you know if you're successful? If you have that second piece of Christmas candy tomorrow, does that means you've blown the resolution? The next time you weigh will that be the end? Or will you wait until the end of the year before you weigh again and use that as a retrospective on whether or not you were true to your resolution? Setting a goal is better. For example, "my goal is to lose 20 pounds this year by going for a run/jog/walk for at least 30 minutes at least three times a week." This tells you what you're going to do and how you're going to achieve it and how you will know when you've succeeded.
Instead of a vague business resolution for the new year like "increase sales in 2012", set a goal instead. Your goal could be something on the lines of "my goal is to increase my sales volume by 10% within 3 months by touching base with each of my existing customers at least weekly to ask how they are doing, what they need, and ask for more business. I will add find at least one new contact each week by asking my existing customers for referrals." It's worth noting that this example goal is only for three months. That gives you the opportunity to set a new goal for yourself at that time rather than trying to boil the ocean on January 1st.
So leave the New Year's resolutions for others and in 2012 set New Year's goals instead. You'll increase your chances for success.