The article emphasizes that only actual action constitutes 'doing the thing', while preparations, planning, and talking about it do not. It lists various examples of activities that are not considered 'doing the thing', such as scheduling, making to-do lists, and reading about how to do it. The article's central message is that taking action is the only way to achieve something. The author argues that many people get caught up in preparatory activities and never actually start working on their goals.