Yes!  Time Management matters!  Why?  Because, once you are in a relationship with a child, you share time.  If you are on a schedule, then your child is too.  It is important for a child (especially in America) to understand time management early so he/she can be less offended by the "hustle" and be free to live a productive life.  For a lot of working families, the hustle is part of day to day.  Modeling time management for your child while they are young sets them up for success as they grow up.