I always was aware my time as my son's world, sun and moon was limited. As he gained more independence I experienced contradicting emotions, pride in his growing abilities and sadness that he didn't need me 24/7 anymore. The tween years have been full of conflicting emotions, one minute he's the cuddliest, loving little boy and the next he won't walk within 10 feet of me. In the morning he'll be playing with his stuffed animals, by the afternoon he's playing it cool, and by the evening he's watching a documentary on the History Channel.
10 Things about 10 year old - Great article that outlines the amazing things about a 10 year old boy.