We should pray for our needs and the needs of others.
But we shouldn't expect to live in luxury because of how much God has supplied us with. I've had times where I've struggled financially but I've never been hungry or homeless. But I had times where I had to pray for things I needed because I didn't know where I was going to get the money for them. In one case, someone offered to give us a bed when we needed one. That was awesome.
RE: Demand and Supply: a kingdom principle. Introduction