First of all, you aren't alone in this struggle. Lot's of us deal with this and you should be encouraged that there are lots of things you can do.
Salt is, IMHO, demonenized far beyond what is due. The thing to watch out for is the food you buy in boxes, cans or jars. Read the label. It's right there...the sodium content. Pay attention to that. The amount you add with your shaker at the table is not the problem.
And, as Smokin' says, "Moderation in portion size".
Lastly, I'll use the "E" word...as in Exercise. No one want to hear it, but it is the key. The longer the better and the more aerobic the better. Start slow and you'll be surprised at you progress. Remember also that it's cumulative...over a day and over a lifetime.
And enjoy each day...