 An obsession means that you get so wrapped up in one thing that you forget all the other important things in your life. Now, sometimes obsessions are good, but that's really cute with the kid. Guys like to look up girls' skirts. Obsessions, in one sense, in a metaphorical sense, are very good. I'm obsessed with my husband. I'm obsessed with my career. I'm obsessed with my life in general.