A Lie, Memory, Dream and Truth

Do lies tell more then the truth? 
Do memories form part of my personality? 
Am I myself in my dreams?

A story about the past relationship between the artist and her mother is told. Then voices of different women circle around you through the speakers, telling you things they experienced. They tell you four things about themselves:
One thing that is true, 
one that is a lie,  

one they remember 
and one that they dreamt. 
Can you tell which is true? Does it matter?