Losing a loved one

They say that time heals all wounds, but if this is true, then why does my heart ache just as much, sometimes more than it did five years ago? Losing Mom was devastating for several reasons. The same reasons, I guess, that make it so hard to "move on" without her. She was my safety and security--my backup; She was my support and also my attitude adjustment (yes, even as an adult she would still set me straight). She was the matrix that bound us together. She was my confidant, and most importantly my best friend.
As I go on, I often compare my decisions, actions, parenting, etc. to what I think she would have done. I hope that I can and will be all that she was to me, especially in the eyes of my children.