Back/nose to the grindstone
To return to/start a hard tedious task
Be on a roll
Experiencing a period of success or good luck.
Bend over backwards
To work extra hard to help someone or to make them happy.
Blood, sweat, and tears
If something needs blood, sweat, and tears then it is a hard thing to do and requires a lot of effort
Give it 110%
Work extra hard to achieve something.
Hang in there
Don’t give up. Keep going through the hard times.
Jump through hoops
Go through an elaborate or complicated procedure in order to achieve an objective.
Make up for lost time
To do something as much as possible because you were not able to do it before. To catch up.
Move mountains
Make every possible effort, doing the impossible if needed.
No pain no gain
Suffering is necessary in order to achieve something.
Pull one’s own weight
To do your fair share of work that a group of people is doing together.
Raise the bar
Raise the standards which need to be met in order to qualify for something.
Stay ahead of the game
To react quickly and gain/keep an advantage.
Go the extra mile
To do more than what is expected to make something happen, or help someone.
Up to speed
To be familiar with current information
