Including recovery from trauma is key.
As stated, trauma is often a precursor to mental illness and substance abuse. What needs to be remembered is that for many the experience of mental illness and/or SA is often in itself traumatizing, with abandonment, alienation, & loss of everything from basic needs to dignity.
martin baiada commented
trauma has been an issue for me. i admire the song, impossible dream. i get by.
This is key to recovery. It's also frequently overlooked and poorly understood. The guiding principles for recovery are a good place to educate service providers and the general public.