Don’t change horses in midstream.
More German Proverbs:
My friend's enemy is often my best friend.German
Never to forsake your ideals is better than dreaming of great things.
German
Tis easier to hurt than heal.
German
He who pays well may borrow again.
German
What you give, is written in sand; what you take, with an iron hand.
German
The dog that starts the hare is as good as the one that catches it.
German