If you're going to give up some salt, perhaps you should also give up soda. Yes, even diet soda. Diet soda has 2% of your daily intake of salt based on a 2000 calorie per day diet. If you are trying to switch to a heart healty diet of 1800 mg of salt per day, I'd suggest doubling that to get a sense of how close you are to reaching your goal.
I'm sure you're thinking that 2% or even 4% of your daily value is not that bad. Except you probably didn't realize this means that you are actually drinking 8% of your daily value in one can. There are two servings per 12 oz can.
If you start thinking in terms of how many of these 6oz servings are in a refillable cup or a 32 oz serving that is now the norm, you are in trouble if you are trying to cut your level of sodium!
The anti-soda sentiment is on the upswing. I haven't even begun to expound upon all the harmful chemicals in the soda we drink. Drinking regular soda isn't better. Have a read of this article from Yahoo Health, 3 Shocking Soda Facts .