I don't have a problem with not going out to restaurants or not having take-out for a month, I do that a good amount already. I tend to make meals in larger portions so that there is a lot of food left over for other dinners and lunches, or I freeze a portion or two for later use.
Yes, I have no problem doing it. I'm on a fixed income and eat out on rare occasions. Also, I have autoimmune diseases where I have to watch what I eat. Certain things don't agree with me... and that usually goes for a lot of fast food, spicy foods.