When Jesus told us we could ask God for "our daily bread" he was speaking about more than dinner. In fact, the reference to bread hearkens back to an Old Testament story where God provided for the needs of his people while journeying through the wilderness.
Often, we struggle with the difference between needs and wants. Things we often say, and believe, we need are little more than wants. Do I really need the latest smartphone? What about dessert? Do I need that? I want it, sure, but need? That's a different topic.
The message available here goes into this aspect of the model prayer (i.e. The Lord's Prayer) and seeks to discover how we can begin to get this right in our prayer lives.