Most of the document you linked is about management practices, presumably written by someone in a management position. This sets the tone. The last topic is more similar to what you wrote, but it is much shorter and to the point. How to Rands is framed as a declaration of management philosophy, and, as such, sounds entirely appropriate. Yours is more personal in nature. If you are in a management position, it may be a good idea to let this transpire in your writing as well.