If you'd like to edit, publish (or un-publish) any of your posts, you can do that by clicking the Edit button when viewing your post, or by launching the edit function from the Manage Posts screen. Either method will open the same editor that you use to create posts. 

Edit the Post You're Currently Viewing

If you're in secure mode and viewing the post you'd like to edit, you can click the Edit button from the right-hand side of the screen, opposite the post title:

 

Choose a Post to Edit

To edit the content or approval status (draft or published) of any of your posts, just navigate to the Manage Posts screen, and then click on the Edit icon beside the post you'd like to work with: