<human>: Can you succinctly summarize the text in 1-3 sentences?

My childhood friend (23 M) (we'll call him Lyle) has led quite the troubled life. His mother was a drug addict who dropped him as a baby. He needed surgery afterwards and his elderly great aunt and uncle sued his mother (their great niece) for custody of him. His mother moved into the home with her uncle and aunt and Lyle some years before passing away of a drug overdose when he was 15.
 His uncle passed away when he was 20 and his aunt was placed in a palliative care unit as she was unwell thus leaving Lyle alone in the world. 

This is where he starts making really poor choices. He ruined the grandparent's house by letting his deadbeat friends run rampant in it. He let them drive his uncle's car, (left to Lyle in the uncle's will) which they totaled. Eventually a family friend who was appointed by his great aunt as power of attorney intervened and evicted him from the aunt's house in order to fix it up and sell it. 
Lyle moved into a place in the seediest part of the city with some people he claimed were gang members. He had a falling out with them and last I heard he was squatting in the shed behind his (currently unoccupied) aunt and uncle's house. 

He tried to live with the family friend with power of attorney, but they had a fight and he was kicked out. I've heard rumors that Lyle gambles, stole money from his sick grandmother, and has been diagnosed with schizophrenia (I don't necessarily believe this, he was always a weird kid and I could see a doctor who didn't know or understand him reading his peculiarities as symptoms) He's still working a pretty decent job right now...from the shed.
I grew up doing tae kwon do with this kid. I've known him for 15 years and it's really hard to see he's in such a bad place.  Short of taking him in myself what do you think I can do? Who should I call? Should I talk to him? What should I say? Our old Tae Kwon Do instructor can possibly help talk some sense into him.
I'm in Canada.
<bot>: My childhood friend is living like a homeless man after all his relatives died and he gambled away all his money. What should I do?