To follow up on Chris's point, what a lot of these members of society need starts with housing. Stability of housing leads to mental stability.
When you're travelling the street day to day, walking through the cold winter rains in Vancouver, you don't have the opportunity to find mental stability. You're just looking to survive. You're looking for the next place to lay your head in the evening. It's about survival. If you start with the basic needs of food and shelter, you can move your way up to dealing with mental wellness.