How to Write a Book in English

I like the idea that you honed in on a particular audience, you narrowed that down for that group and sort of the bricks for success. Now, I presume that this is because it's in the title is in German and the content is in German, that your target audience is primarily German speaking account managers, correct? I really know and I it's really for account manager all over,. I'm learning as we speak, if because I'm from the IT industry, I worked for SAP in Cupgemini if this is also for key account managers in other industries. But as I try to write about first principles so really fundamental elements, it should be for other key account managers as well