ought/ought to

Which one is correct? As long as it's not a negative statement, ought to will always be acceptable.

You ought to go away. You ought to jump off the roof. You ought to shut up now. Get the picture?

If you utter a statement in a negative sense, then you want to go with ought. For example, you ought not be seen in my presence, you ought not stick that screwdriver in your ear, and you ought not play with matches.

This pair of words doesn't really require a whole lot of additional explanation.

I ought to go now and decide what I wish to tackle tomorrow. In the meantime, you ought not be criticizing me or my posts.