Can You Dissociate from Your Memories and Pain

One of the most amazing defenses God has given us is the ability to dissociate from our current pain, painful memories and whole segments of our life, too painful to keep in our recall.  Sometimes, adults report that they cannot remember certain years of their life until mid life. More and more people come for healing of fractured identities, after years of abuse.  How does one get their identity back together and how does Jesus make us whole again?  Is it important to remember?  To relive painful memories?  Can Jesus make us one or whole again?