I imagine others will chime in but in the long run the first thing is to get well and get these health issues straightened out.
Then you will need to get the help of a senior HIMS AME to deal with the medical issues for the FAA.
If the BPD diagnosis is in error, there might be a chance to straighten this out. But you will need to be in a HIMS program.
The FAA also considers 10 years of off meds and no events or problems as pretty good evidence one can fly safely.
Selling the meds is a serious crime but there is a statute of limitations on that. Might want to check with an attorney on that.
Also of note, most of the senior HIMS AMEs will not work with people that have been involved in falsification to the FAA in any way.
So I would suggest focus now on getting well, realizing there is a chance you can fly someday.
Best wishes in your recovery.
