Re: Husband thinks I worry too much
There's preparing and planning, and then there's worrying.
What you describe sounds, to me, more like preparing and planning. You're thinking of potential, realistic things that could happen, and trying as best you can to prepare for them. That's logical and smart.
Worrying is when you spend all your time thinking about every possible worst outcome, planning for it, worrying some more, planning some more, worrying, and on and on, even though that worst outcome is less likely than you being struck by lightning.
Now, the only thing I can say is that we all tend to write our stories slanted to make us look better, not intentionally, it's just what we all do without realizing it. So...with that in mind, maybe it's possible that your husband sees something we don't, and you don't, that makes what you are doing a problem. I would try to talk to him again. But this time, approach him like this,
"Honey, I'd like to talk. You think I worry too much. I disagree, but I think it's possible I'm missing something. I'd like you to tell me some specific examples of where I worry too much and what it is that I do that is worrying too much."
This might help with not turning it into an argument, plus it'll get him to get you specific examples, which will make it easier for you to see that you are worrying too much, if in fact you are.
It also might make him more open to listening to you as you try to explain your issues with his philosophy toward it all.
Once those lines of communication are open, then it might be easier for you two to talk and find a compromise.