No matter how busy you are, have no time to do it is not an excuse, because blog can helps your business or event better a blog can helps you as a well-known brand!.
Maybe the first though on you mind is “it’s crazy, i have no time to do such a lot of articles”, so don’t worry , because you dont need a lot of articles to makes your blog usefull.
Think about, how if you can make a single post of articles, that say clearly and event better if you can update it well. More you post and update it, more knowledge and insight inspiring your articles. And more people knowing you as a personal brand and your professional services.
Then why not having a blog right now!?