How do I let go

The flashing images haunting
The memories constantly taunting
Fear preventing sleep
Even after decades the pain resides deep
Shaking in terror remembering that night
These demons still unable to fight
As much as I try to block it all out
Nightmares unable to sleep without
Fighting to hold back tears
In my sight every detail of his face appears
His laughs still echo loud
Remaining his victim I allowed
Only disguising the pain so others won’t know
But how do I forget and let go