To dream that you lose something may mean that you really have misplaced something that you had not realized yet.
It may also be a signal for you to clean up and reorganize your life. You have become overwhelmed and distracted with the drama and trivia of daily life. Finally, a dream of losing something important can also suggest lost opportunities, past relationships or forgotten aspects of yourself.
Your personal associations to the thing you lose will clue you into the emotional meaning and interpretation of your dream.