Yep, the institutions rarely help, especially short term ones. My family has had some success with long term treatment, but it was a multi-year, multi-facility journey for all of us.
Mine specifically was for substances and attempted CTB by overdose. My journey away from getting fucked up has been decades in the making. Hospitals, lock-ups, shrinks, doctors and 12-Step meetings on & off since 1989.
It seems like I kept going back to my old ways despite wanting to recover.
"When at the end of the road we find that we can no longer function as a human being, either with or without drugs, we all faced the same dilemma. What is there left to do? There seems to be this alternative: either go on as best we can to the bitter ends--jails, institutions or death--or find a new way to live."
That's from the 12-Step program I attend, but it applies. I have kept plugging away at that new way for a couple of years now. Long enough to know that there are no quick fixes, and while I'm not responsible for my mental illness, I am responsible for my recovery.
Best of luck "holding onto the boat".
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