From the Gospel Coalition Blog:

We imagine many scenarios. We worry about many things that will never happen. I like the definition of worry I recently came across:

Worry is interest paid on a debt we may never owe.

God doesn’t give us grace for our imaginations.

God gives us grace for today, grace for what’s right in front of us. Today is Monday. And today God has given us the supply of grace we need for navigating Monday, December 21, 2009. But today, Monday, God hasn’t given us the grace to handle Tuesday or our imaginations of Tuesday.

Read the rest of the article here.