A detailed personal experience from a journalist plus an overview of current research and comments from the neurologist that helped identify and popularize the concept of "The Entourage Effect", Dr. Ethan Russo.
It turns out that CBN isolate doesn't work all that well for sleep. It seems to be more effective when some of the other cannabinoids like CBD and THC are there. Another example of the benefits of whole plant, full spectrum products.
Here's the original article from mashable.com.