Decoupling work from living
In the world, we often times feel like we must work to live. But here Jesus Christ teaches his disciples to decouple working from living. People are anxious about work because they are anxious about living. What will they eat? What will they wear? Where will they live? Can they go on vacation? et cetera.
Jesus wants to solve that problem once and for all for them, by telling them their Father will give them food to eat, clothes to wear, a place to live, a vacation to enjoy, et cetera. He does not want them to be anxious in any way shape or form. He even points out to them that their worrying and anxiety and toiling and storing up and laboring does not add an hour to their lives. The Father is the giver of life and enables people to live.
Once people are decoupled from worrying about living, there remain two choices before them. Some people are simply lazy and coast on the grace of others. This displeases the Lord, quite obviously. Not worrying about living does not mean not working. Jesus teaches the disciples not to worry at all, but to work for sure, to seek the Father's kingdom, which the Father wants to give them. He wants his disciples to be really rich in his Father's kingdom and he wants them to store their treasure in a place where it is not destroyed or stolen or diminished in value by inflation, but endures and he wants their hearts set on his Father's kingdom.
So to summarize:
1. Do not worry at all about anything that you need. Your Father knows you need them and your work is not designed to secure them. Your life does not depend on your work, your life depends on God's grace. Be completely free from worry and sing and give thanks to your Father who loves you.
2. Work wholeheartedly, give generously, as you can, keep squirreling away your treasure in the best investment possible: the Kingdom of God. Seek the Father's Kingdom, expend your energy and toil in pursuit of it and enjoy it, for great is your reward and it is a reward given not begrudgingly, but with good pleasure.