"I will no longer be requiring your employment services?"

I don't think I've ever seen it put that way on a resignation letter. Seems quite conceited and self-aggrandising. Usually the aim of a resignation letter is to part on benevolent, cordial terms, which requires coming across at least somewhat deferentially and graciously -- not as a smug fuck.

I was intrigued by the title, but the writing has a "self-help" quality that makes me question the value of it. Personal development websites seem very meta, as they often blog about systems they use (or just thought up, who knows?) to be more productive while blogging.

A bit more on topic: that does seems like a terrible way to leave a job. Burning bridges and what not.