Parent, is a heart and wisdom of journey
Many times in life, not just parents, we should know how to advance and retreat.
In a relationship of parent-child, we should know when and how to let go. Our child is not our lifetime possession.
A real story of a retired mom of 57.
http://www.cocomy.net/post/359819?r=7454380
If you can't read Chinese, google translate it. It worths your time.