Just learned that I must adopt a low salt diet, too. Doctor's advice was...
1st, don't eat anything that comes in a package, i.e. chips, boxed food mixes, etc. All are loaded with salt. My doctor recognized that its more work for me, to prepare foods from scratch, instead of opening a mix, but it's the only way to control my salt intake.
2nd, don't eat in restaurants. The food is heavily salted to taste good so you will come back, not because the restaurant cares about your high blood pressure, etc.
3rd, read, read, read labels. Canned veggies are loaded with salt, so are some frozen ones. Canned soups are really bad! I see more and more "no salt" canned items on shelves now.
Salt is an acquired taste. Michael is right, you won't miss it at all after you are weaned off of it.
"Google" low sodium diets and cooking for good information. Thru this I learned that celery and beets are naturally very high in sodium, and should not be in a low salt diet. Sodium is also high in unexpected places, like crab meat! Baked goods that contain baking powder or baking soda should also be avoided, high in sodium. No more biscuits or cornbread for me!
Research the internet, you will find lots of information on low salt, low sodium diets.
Take good care of your DH!