Do you add salt to your foods or are the foods you are eating high in sodium naturally? I did a few things to cut down on my sodium:
1) no more added salt to prepared food, ever.
2) cut the salt requested in recipes to little or none
3) replace all of my seasoning blends with salt free versions or make my own blend with the component spices
4) replaced high sodium food items with lower sodium staple components
5) no salt added tortilla chips - sounds like a little thing, but I eat a lot of chips and salsa!

6) no frozen meals unless they are a last resort, buy only the low sodium options
7) lots and lots of water
8) rinse my salmon and tuna before eating
9) low sodium chicken broth
One of my downfalls is hot sauce - I love it and eat it on everything, I've found one with lower sodium per serving, but realize I'm going to get some from those sauces and I'm not willing to give them up. So, I had to give up the other sodium bombs to afford the hot sauce.
I can tell when I eat something with a lot of sodium - I'll hold onto five pounds of water overnight and then drop it in three to five days.