K9keystrokes, great question.
It's important to understand your target audience, the people you are trying to reach, if you have a goal to provide content with value and actually want to help people which can only happen if they read your article.
If you don't know or understand your target audience, how do you expect people to find your articles, blog posts, videos, or whatever your online content is?
It sounds like you write about a wide variety of topics.
As an example, let's say you want to write an article providing some really helpful tips for dog owners.
It's important to realize people who are not interested in dogs will not be searching for your content or want to read your article.
Rather, people with a love for dogs will be the target for your article. After all, you really want to help people via your helpful tip, right?
To find these people, your target audience, do keyword research so you can specifically target the people who will be searching for your informative article.
The more specific your keyword research, the more likely you are to reach your specific target audience.
If you need more information, let me know!