You'd be better served by focusing on your mental health treatment reather than lawsuits against your adoptive parents. There are good parents and bad parents---whether they be biological or adoptive. It is unfortunate than, after your biological mother was unable to care for you, you ended up with adoptive parents who were not really cut out for the job. I don't see any theory under which you would be able to sue (based on the scenario you present). Move forward and focus on what you need to make your life better from here forward.
I do not see any basis in law for you to be able to sue your adoptive parents. Even if there were something you could sue about, it would be far too late now. I agree with the previous writer. Let go of your desire to sue. You don't need a court judgment to validate your poor treatment as a child. Work with your counselor to focus on your own well being for the future.
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I cannot see under any theory of law that comes to mind that would still allow an action which would survive a motion to dismiss based upon untimeliness. The statute of limitations would expire at most 3 years after you reached 18 years of age, plus any period of incapacity. Other statutes of limitation applicable are even shorter. So without even trying to fashion a theory of recovery, I think you are time barred, but you should consult with a personal injury attorney who can advise you more particularly.
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