'impact someone' is correct and usable in written English.
You can use it to refer to a certain action or event having a strong or direct effect on someone. For example: The news of his promotion had a positive impact on his parents.
In a very personal way, there was an assistant dean of students, a guy by the name of Carl Wartenburg, who reached out to me in freshman year and became a lifelong mentor and demonstrated the impact someone in his kind of position could have on someone like me going through Princeton.
"The point we're making is: they come to us with the concerns, because within the organisations for which they have strong ideologies and beliefs they are happy to go along with that, but what they will not get involved in is maybe where it's gonna impact someone else.
If you don't need a straw to take a sip of water, pain medication to deal with the effects of a chronic illness, or a laptop to take notes in your college class, it can be easy to overlook how policies such as these impact someone else's everyday life.
In corporate/consulting roles, I've edited all types of projects and found that no matter the communications medium, the why is always the same: to purposely impact someone in order to influence a behavior.
When asking for money, don't take anything that can materially impact someone's lifestyle if it's lost.
When you know that you can impact someone's financial future, that's really the driver for all of us.
This meaning was found in impacting someone else.
Of course it's all theoretical gibberish until someone actually does something that impacts someone else.
In most cases, when a legislator takes up a cause in healthcare it is because it impacts someone they love or someone in their district.
Something can be very mundane or dry, but when people learn that it impacted someone else and could possibly impact their everyday lives, they become significantly more interested.
If we want a dynamic economy, one that provides as many opportunities as possible for all people, we need to accept that it's OK for people to make mistakes and lose money – even if it impacts someone else.
