Storing up treasures in heaven. God is not against wealth. The question for Him is 'Where is our heart?' Our trust and dependence is to be on God rather than on earthly wealth. The wealth of the world can be destroyed or taken away in some manner. If it is, then what do we have. Nothing can be taken away from us if we've stored up our treasures in heaven. The 'Bank of Heaven' is secure and our deposits are guaranteed.
None of the wealth we actually have is ours. Everything belongs to God and we are stewards of what is His. How we steward what He has given us is important as we hear in this message.
Jesus has a LOT to say about worry and he goes into detail about the futility of worry. God knows what we need. We can trust Him to provide for our every need. Jesus tells us to "seek first the kingdom of God and his righteousness, and all these things will be given to [us] as well.
This does not mean that we don't have to work. No, work was a part of creation BEFORE humankind sinned. But even as we work, will our trust be in God or in ourselves?
We are also told not to judge others. We can however judge the "fruit" of a person's life. A good tree cannot bear bad fruit and a bad tree cannot bear good fruit. We are told to first get the plank out of our own eye before we attempt to take a speck out of someone else's eye.