I got same problem as same as your brother does before, but I am get over now. I think better might bring your brother join with our SUNDY DISCUSSION GROUP. You may find by:
Sinoquebec » 蒙城生活Being In Montreal » 交友联谊Friends&Entertainment » SUNDAY DISCUSSION GROUP INVITATION
Call CLSC to ask them. They have social workers and psychologists to help you. If your brother can find a job, it is good way to make some friendschange his mood, and build self-confidence.