Do somebody/something a power/world of good British old-fashioned informal
To have a positive effect on someone or something
The fact that you've come all the way down here to pick me up does me a power of good.
I think taking a walk right now would do you a world of good.
To become better
People's arms linked together to show the intimacy between two people.
To not wonder, worry or be surprised about what is not predicted will happen in life because anything could happen
The verb "do" should be conjugated according to its tense.
To overcome some disadvantage or get out of a bad situation when you have already lost a lot of time for it
We love Tim but we all think that it's impossible he can make up leeway and win first place in the race.