Your possessions reflect your lifestyle, your strengths, weaknesses, attachments, and skills. Make no time for useless things. Own only what matters to you, or else let it matter to someone else.
(Bonus personal opinion: too many people abuse the new year as an excuse to be fitter, or thinner, perhaps happier, more hardworking, less stressed. But we have the choice not only to improve ourselves at the change of a year, but the change of a week, day, minute. Those who make these decisions and refuse to rely on mass-organized resolutions demonstrate a more valuable strength. So go ahead and pledge your resolutions. Perhaps you’ll even follow through this time. But don’t wait another year to realize that the choice is yours, not the calendar’s.)