Use of double comparitives: "The more carefully you..."

[Tom]

Quote:

The more carefully you plan your classroom activities, the higher your level of self-confidence.

Would you say that the above sentence is complete? How about using "it" at the end?

Tom

[Yankee]

Hi Tom

I think the sentence is fine the way it is. You could add "will be" or something similar to the end, but I don't think it's absolutely necessary.

Amy