A way to not concentrate on what we don't have is to focus with gratitude upon what we have in this moment.
Even if we live in a halfway house there are things to be grateful for.
I have my health. I'm not in jail. My family is speaking to me again. I have a job and a place to live. Food is available. I have a sponsor. I'm rebuilding my life.
You can make your own gratitude list.
When we look around we find a world full of wonderful material things. And the problem with these is that once we get them the novelty wears off. Then it's on to the next thing. An endless cycle.
And, as Oprah says, it's never enough.