The 12th house is associated with self-undoing of any kind. Addiction is a good example of self-undoing. A person exists, “unimpaired”. They get themselves high as a kite – all kinds of things happen.
There is the depreciation in the moment, but the effects of the drug use are not contained. You can hurt others, for sure. But I’m talking about the long term affects which may not reveal themselves for years or even decades to come.
This is the nature of the 12th house. It has no boundaries!
If your 12th house is emphasized, you’ve probably had experience with something like this, but not necessarily as the person who causes themselves problems. You might be the person who helps the person who causes themselves problems. This can also be tricky. Helping the self-undoing can become your own undoing!
Is the 12th house emphasized in your chart? Tell us about self-undoing.