When was the last time you asked God for something? When was the last time that, after you prayed, you trusted Him to do things? Even if He didn't do things the way you thought they should be done?
While giving the model prayer, Jesus showed the disciples that they should pray for daily bread. The life of Jesus is a testament to His faithfulness in living this principle out and setting this example for His disciples (for one example, see John chapter 6). Jesus not only taught the disciples to pray for their food, but to, in obedience, trust God to provide it.
What if we began to live life this way? What if we were to pray, each and every morning, that God would provide us with what we need? What if we trusted Him to do this? What if we changed our lifestyle to reflect this trust in God?