I suggest you to read this short article on Medium.com
It's worth it, especially if you have a blog. Here's few passages:
Copying other people’s ideas for blog posts or writing about something you don’t know a lot about, is not how you write incredible blog posts.
I’m going to tell you the secret to writing great blog posts right now:
Write about what you know. It’s easy to think that the things you know aren’t very interesting. Why? Because you already know them!
Write about unique experiences that you have had. Do I want to read about how you do the same things I do? Nope, that’s boring. I want to read about the things that you have done that I have never done
Be concise, to the point, interesting, and engaging! Is it it fun to listen to that guy at the party who speaks in the same tone of voice, just keeps talking and talking, and has no apparent direction or point? NO!