Janet, it's a big change and it IS time-consuming. I grumbled about the same thing, and someone kindly reminded me that eating mindlessly was what brought us all here in the first place
Yes, it does get easier, once you get the changes incorporated into a routine. But that takes time. How long? It depends how off-base you were to begin with. I was VERY off-base. I lived on cereal, English muffins and jam, candy bars and cokes. So it wasn't just "cut out the pasta" and "substitute romaine leaves for bread at lunch." I've had to turn my life upside down. Is it hard? Yes. Is it worth it? Yes.
As for dining out, it may help to think things through before you go. What kind of restaurant are you going to go to? What is likely to be available? What will you probably eat? What must you avoid? Chinese restaurants are hard! So are Mexican. They're possible, but it's hard to put together a low-carb meal. But if you're going to a French or a mixed menu restaurant, you can think it through before you go. A steak or a chop, vegetables, salad with dressing. Put the bread on the other side of the table from you, if you'll be tempted, or ask the waiter not to bring any. Dessert is out, but there will be plenty of appetizers you could have.
If you do this, you won't have to write it down and look things up there. Just eat from your allowed foods and write it down when you get home.
We all make mistakes during the adjustment period. "I didn't know shrimp cocktail sauce had that many carbs in it," etc. That's how we learn
Good luck!