I'm always in the place this scripture describes, sometimes more than others.
from: Bible Gateway
Three verses long, it cuts deep.
Some brief considerations:
Something has happened to the Psalmist, a trauma. He compares himself to a weaned child with its mother. I've been around children freshly weaned. Sometimes they don't take to leaving their mother's breast very kindly. There's much grief and tears, but if the child is to grow, they have to leave their mother's milk. From that point forward, the sustainance they get from their mother is different. Deeper than physical provision, they can be still, and know that even though what once was will never be again, there's better things, bigger hope, more comfort coming from the One who loves them.
When God takes the milk away, He's still there, as a mother with a weaned child. Holding us, comforting us, keeping our soul sustained.
Don't understand where your money will come from - calm yourself.
ISIS related terrorism got you worried - calm yourself.
Prexisting condition keeping you from getting healthcare - calm yourself.
God is still doing something even though you're not getting milk anymore.
Let your cares be carried by the Lord!