Good sermon. A lot to reflect on here. Especially what is said about wasting time with worldly concerns - something I, and all of us, are guilty of.
There's being concerned and then there's being "concerned".
When various bad things happen, we do have our natural human stress response. If 5 bad things happen at the same time ... my plumbing bursts, my furnace dies, my car won't start, and I'm struggling to pay bills ... those things are all of concern when you're in the moment. It's our natural response to call us to action to start handling things. So it's hard to totally "float above" these types of things. We can mitigate them to the point of accepting them peacefully, but while we're in the valley of tears, we're plagued with these scenarios. That's why Sunday is so important as a day of rest. You put all these "worldly cares" aside. In the Eastern Rite Mass / Liturgy, there's actually a refrain just before the Anaphora (Canon) to the effect, "let us put aside all earthly cares", where we can focus on God and be at peace with Him. After the dust settles, it's important for us to pray and re-center ourselves on God.
It's hard for those who don't live in the world to really understand this though. When I was at seminary, I didn't really have a "care" in the world. But then I didn't have to deal with a lot of the worldly nonsense then ... like breaking up a big fight among 5 or my 6 children, often divided into 3 camps.