It is informal but can be used in any situation from cleaning the house to government departments not fulfilling their tasks:
 
What To Do When A Team Member Isn't Pulling Their Weight

[Forbes | 06.11.16 | LINK]

It is usually used when planning, competition or business practices are involved and steps need to be taken to achieve a goal, for example:  

• developing infrastructure in which business thrive [advance planning and opportunities]
• developing an antibiotic [to be first means making more money]
• sport and keeping ahead [prestige, pride and profit]:   

Harriet stays one jump ahead to win national title 
 
[Shropshire Live | LINK]

If you have someone completely under your control, they are eating out of your hand; like a bird who fears nothing, it would eat out of your hand:
 
Former White House spox: Obama never had media ‘eating out of his hand’  
 
[The Washington Post | LINK]
[spox informal spokesperson]

Sometimes we are glad when someone comes. Sometimes we are not. When someone has gone, and we do not have to deal with them, again, we can say I’m so glad to see the back of her!

It means to be rid of (an unwanted person or thing) and can range from a difficult report just finished to an interview:
 
Why Germany would be especially happy to see the back of Trump  
 
[The Guardian | LINK]

It means to foresee or be prepared for an event, typically an unpleasant one. Or maybe they didn’t, so they didn’t see that coming.

It is generally used when the speaker has absolute confidence in the task. It is not usually used for regular tasks or jobs.

In rewilding Europe, letting nature do the work is no walk in the park

The Grand Barry nature reserve in France's southeastern corner is undertaking one of Europe's largest experiments in rewilding.

At a time when reforestation projects -- planting new trees -- are growing in popularity, rewilding aims to let nature do the work by simply leaving ecosystems alone to recover, free from human influence. 

[AFP | 18.08.20 | LINK]

Got a big decision to make? Sleep on it

As we tuck ourselves into bed at night, little do we realize that we have the chance to get some extra work done while we sleep.

The unconscious mind has long been appreciated as a well of creativity from which some of our greatest artworks, scientific discoveries and inventions have been dredged up. But studies show it is also a powerhouse when it comes to processing unwieldy amounts of information.

When making complex decisions that require us to weigh multiple factors, some researchers believe we can benefit from learning to combine our conscious deliberations with unconscious processing.

The idea that we only use a small percentage of our brain's capacity is "completely ridiculous," according to Maarten Bos, who researches decision making and the unconscious mind at Harvard Business School. "We use our brain the whole time," he says.

[CNN | 28.08.12 | LINK]

We remark on what was said or what was done:

• THAT'S RICH! Disgraced fund boss Neil Woodford who left investors £450million out of pocket is back in business

[The Daily Mail | 11.07.20 | LINK]

• Due to the delay in transferring the money, I’m out of pocket by 300 euros.
• THAT'S RICH! Disgraced fund boss Neil Woodford who left investors £450million out of pocket is back in business

[The Daily Mail | 11.07.20 | LINK]