Dumb question?

Sodium is always good to decrease so long as you don't impede your muscle's ability to function. As well, sodium isn't a macronutrient and doesn't generally impact weight loss unless water retention is an issue.

Macronutrients include:

Carbohydrates
Fats
Proteins

Standard dietary ratios are:

Carbs: 50-55% of daily intake
Protein: 10-35%
Fats: 20-30%

You should note that sugars ARE carbs, usually monosaccharides or simple sugars (so cutting sugar/carbs is a touch redundant).

Essentially it will come down to what your intentions are. If you're looking to lose weight, then lowering total daily kcal intake (across the spectrum of macronutrients) will be helpful, as will increasing activity levels to help create a negative energy result daily (weight loss = energy in < energy out).

If you are trying to recomp (that is, your weight is healthy and you just want to alter your structure to build up muscle/lose fat or lean bulky areas), then your changes are going to be different (and you may want to check out the recomp threads for advice on that - not my thing at this point as I am personally just trying to lose body fat at this point and will deal with recomp when I reach that point).

Without knowing your details, it is hard to answer this question:

Age?
Sex?
Height?
Weight?
Purpose?
Exercise?
Diet Sample?
Health Issues that may impact advice (Diabetes, IBS, Crohn's, Lactose Intolerance, etc.)?

Cheers,
Rob

Sodium i would not worry about as long as you drink a lot of water and exercise regularly. Sugar I would not worry as long as you keep the the refined sugars out. Between fat and carbs i will usually cut carbs only because I don't like going too low on my fat intake.