The Sentence Diagram Generator visually represents the grammatical structure of the sentence: "Are you certain whatever you're doing is worth it?"

1. Main Clause: "Are you certain"

   • Subject: "you"
   • Verb: "are"
   • Complement: "certain"

2. Noun Clause: "whatever you're doing"

   • Subject: "you"
   • Verb: "are doing"
   • Complement: "whatever"

3. Predicate: "is worth it"

   • Subject: (implied "whatever you're doing")
   • Verb: "is"
   • Complement: "worth it"

The diagram would illustrate these relationships, showing the main clause and the embedded noun clause, highlighting the connections between the components.