We do heal after long-term benzo addiction. I did. I was on klonopin for a decade, prescribed 20 to 30 milligrams a day for the last couple of years.
If you are out of the acute withdrawal phase and just dealing with intense anxiety, insomnia, etc., you stand a great chance of recovering in a few months.
I did. But my acute phase was pretty nasty, including a 10-day stint in the hospital, three of those days in four-point restraints.
I healed after a year.