If you don't measure it how can you judge your progress? Subjective measures like looking in the mirror and how your clothes feel are both important tools in your fight against the flab, but by taking regular body measurements (yes including scale weight), you can keep a much more accurate record of how your program is progressing.
Similarly, while it may not be necessary to count calories, keeping a food diary, certainly in the beginning is a massively helpful exercise, in order to help you make tweaks and changes to see better results.>