Take a look at Arnold Schwarzenegger when he was in his prime. He got there because he worked intensely on the peripheral exercises that brought in his waist, cut his forearms and back, and made his physical status approach perfection. You are not Arnold; you can't be. But you can follow his lead, take care of the little things, and get cut.
If you didn't do your cardio this week then guess what? You're doing it all today. Cardiovascular training is an essential part of burning fat. If you don't do it, you won't see the results you've been working so hard for.