I just read your story and want to welcome you with open arms. I think carers deserve medals, or at least a willing ear late at night.
I am not a professional, but I have a big heart like you and have dealt with addictions like alcoholism and MI (Mental Illness). To help your brother it seems, takes a lot of energy (and financial burden).
My sincere advice is, have boundaries and let him know what they are.
Have yourself in mind first. You are no.1
I hope you sleep well tonight and write to me when you can.
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