I feel my H has hit 'Rock Bottom'....a BUNCH of times!!
Having been around some druggies, some clean up for good, others keep the cycle of a poor life style going. Unfortunately, I know cases where rock bottom was death. One was someone who stopped using for years. Another was a woman in her late 20s who was smokin' hot.
On the flip side, there are people who realize their mistakes and truly change. As BND said it is different for everyone. Sadly, some never hit it.