There are a number of reasons for our difficulty with New Year's Resolutions and other efforts to make positive changes in our lives. For example, our goals are often unrealistic or vague, we give up too easily when we have setbacks, and we have a tendency to "bask in projected glory"--research suggests that when we announce lofty goals and envision ourselves accomplishing them, we become less motivated to pursue these goals in reality because we feel, in some sense, that we're already there.
In addition to these obstacles, we may also be hindered by an inability to see our future selves--the ones who will suffer the consequences of the poor decisions we make today--as us. Rather, we tend to see them as different people altogether, people whose happiness is less important than the happiness of our present selves.
In support of this idea, research suggests that people show the same attentional biases when making judgments about their future selves as they do about another person (e.g., more attention to stable traits, less to situational factors), and that brain activation patterns during thoughts about one's future self are similar to those corresponding to thoughts about another person.
How can we learn to do right by our future selves? In one study, future self connection was increased by having participants write about how they would remain similar over time. Just taking a moment to consider what "future you" will be like can help remind you that "future you" will still be you.
In another study, a social responsibility appeal (e.g., "...your 'future self' is dependent on you...") led people who already felt connected to their future selves to choose to save more money for retirement, whereas a self-interest appeal (e.g., "...your long-term well-being is at stake...") had no effect. These findings suggest that it may be useful to think of your future self as someone you care about, rather than straining to feel self-interested about a self who doesn't really feel like you.