This article says “There Is No Such Thing as a Psychiatric Disorder/Disease/Chemical Imbalance”.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1518691/
This article says “The chemical imbalance theory is disproven, yet it’s often presented as an explanation for mental health conditions.”
https://www.healthline.com/health/ch...e-brain#causes
And this one “ researchers have not proven that chemical imbalances are the initial cause of these conditions. Other factors that contribute to mental health conditions include:
-genetics and family history
-life experiences, such as a history of physical, psychological, or emotional abuse
-having a history of alcohol or illicit drug use
-taking certain medications
-psychosocial factors, such as external circumstances that lead to feelings of isolation and loneliness”
https://www.medicalnewstoday.com/articles/326475#myths
All this to say that even the most mental health problems need to be approached on many levels, including active participation of the patient. We have the misinformed idea that this is beyond the depressed person’s ability.
We, as friends, are not the counselor or god they need. And the more we try, from good-hearted attempts, just make us miserable.
OP you have put in enough years caretaking. I know you do care for them but it’s taking it’s toll on you. You can’t be their answer. I hope you can free yourself from this viscous circle and be happy. Detangle and love them from a bit afar. Good luck.