Series of articles - Create a series of articles on your blog if the subject you choose to talk about is an extensive one.
Share your personal experiences on your blog occasionally. It makes your posts more real and helps your readers connect with you.
Post Ideas: At times you will just run out of ideas for post not sure what to do. use google and apps like Evernote to note down all that ticks in your mind. Something will surely turn into a new post.