"But seek first the kingdom of God, and His righteousness, and all these things will be added to you."
There are things, in life, which only come with age. There are exceptions, but most of us just have to learn the things of life the hard way. O' how I wish I had learned the lessons Jesus was teaching here at the end of Matt. 6! More than just not worrying (the negative) but focusing our attention on something which matters more! (The positive)
Jesus teaches us to focus on Kingdom matters ....the cure for whatever earthly is the matter. This is not just blindly denying worldly matters, but properly focusing our attention, firstly, on Kingdom matters ...we will then face all matters within God's world-view.