It's a broken-hearted song, because it is more "if only". It is a simple task, but we, as humans, are always looking for something physical we can do with our hands, when God says to just humble yourself and rely on Him. It's hard on our feeble minds to come to the understanding that He knows best and if we would only speak with Him, then listen, and turn from everything else to seek Him, He has promised that He will "heal our land", i.e; restore our source of provision as only He can.
"Trust in the Lord [Jehovah] with all your heart,and lean not on your own understanding; in all your ways acknowledge Him,
and He shall direct [make smooth] your paths." Proverbs 3:5-6
Story Behind the Song
If we could just bring ourselves to do the simple things God requires of us, he will do his part. Every promise in the Bible has an "IF" with it. We have to have Faith in God and DO what he says, knowing full well that HE will do what HE says.