How to make a blog interesting

What I have learnt from this video is that you have to consider your audience when writing a blog and you also have to be very specific and unique to attract them. This is as if your blog is complicated the audience will not understand it and if it is the same as everyone else's, they may find your blog boring and may not want to read it as they may not find it attractive and appealing compared to other blogs and they may not find it very original either.