Do people really want the real you? All of it?
The answer will, of course, depend on the audience and the forum.
If you are writing a blog about drug addiction, telling your most horrifying stories is a prerequisite. Your audience will expect it.
If, on the other hand, you are writing a blog to support your tax preparation business, you probably want to keep most of your tales of woe out of it — no matter how “real” they may be.