You are right. I misspoke. What I meant to say was that our national debt was around 34 trillion dollars. Consider that a kind of typo. Forget I said it. Because that wasn't what I meant to say to begin with. Unfortunately I can't go back and correct it. Next, any money you have is American money. If you buy a case of beer from Germany, that American money is then owned by Germany. And it is that much money less that America has. That makes them richer and us poorer. That is a kind of debt.
Next, it does of course make a difference what you are paying interest on. After all, paying the interest on a 234 trillion debt would be much worse than paying interest on a 34 trillion dollar debt. But when it comes to the debt-obligation itself, it doesn't make a lot of difference. Just as paying interest on just the 34 trillion dollar debt does nothing to make it go down.
Next, it doesn't make much difference to quibble over the difference between a debt and an obligation. You are obliged to pay for both. Next, how much in assets does the average American have. Not enough to pay off our national debt alone.