A successful blog is focused and consistent. A blog should be dedicated to niche and create content that provides value to the readers.
You need to write consistently to build a successful blog. That means creating a schedule and sticking to it. The best blogs are reliable and are a place where visitors can come to get accurate information.
Lastly, a successful blog is reliable and trustworthy. Your audience needs to know that you are an expert in your niche and they can trust what you say.