EMDR or Eye Movement Desensitization and Reprocessing (EMDR) is a psychotherapy treatment that was originally designed to alleviate the distress associated with traumatic memories. This tool is very useful for people who have trouble putting the past in the past.
I have an interest in EMDR and have attended training with this powerful tool, though I have not yet attained the highest level of training and certification.
(Follow this link to learn more about EMDR)