Ask anyone what they are resolving to do this year, and more than likely they're not going to say, "I'm going to be more forgiving." It's much easier to respond to such a question with "I'm going to lose weight" or "my goal is to get out of debt," because that's what people expect you to say (unless you're rich and thin). Besides, who's going to hold you accountable for your resolution if it's the same as everyone else's?
But try telling your friends or your spouse or your kids that you're determined to forgive more, and you'll probably get a funny look in response, as if you're expecting them to do something that needs your forgiveness. The point of forgiveness, of course, is not to anticipate just who it is who will wrong you, but to make it a part of your life, so that when the bad stuff happens, you are ready to forgive the perpetrator and let it go.