in the doldrums
lacking activity, depressed, dull
This expression alludes to the equatorial doldrums, a belt of calms and light winds north of the equator in which sailing ships were often becalmed.
Link to present incidents:
Zimbabwe's economy has been in the doldrums for 15 years. The country is impoverished and earnings are low - but eating out has never been more popular. In consequence, the restaurant scene is booming.