Write with conviction. Pick a side and be bold. And if you're wrong, admit it.
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.
Blogging is all about sharing; no matters if the blog post is written by you or not. Keep spreading the good vibes for your readers.