Gone to pot.
More Traditional Proverbs:
In October dung your field, and your land it's wealth will yield.Traditional
The old gray mare just ain't what she used to be.
Traditional
Money lent to a friend must be recovered from an enemy
Traditional
Worked night and day.
Traditional
The gods only laugh when people ask them for money.
Traditional
A bird in the hand is worth two in the bush.
Traditional