Just to disagree for a moment with snow and miss
, for a lot of people, gradual change wrt cutting down carbs may make things more difficult, particularly if you have any degree of impaired glucose tolerance (almost certain if you are overweight), as it prolongs normalisation of blood sugar/insulin response.
So if you are feeling like gradual change is not working for you, don't give up, change tactics! The "cold turkey" approach may be better. I really had to do it that way!
For gradual reduction of carbs, I'd recommend as a first step, for moving ALL gluten containing grains, foods, sauces, snacks (and that means a lot of label reading!), as there are particular problems with gluten and the lectins which are found in the same foods- they increase appetite and have addictive properties so are not great for those of us trying to curb appetite!
You have mentioned Marks daily apple, there is info about all these things on that blog, it's very good. Other interesting blogs include Robb wolf (paleo solution) blog, and dietdoctor (Swedish lchf blog).
Your family probably won't even notice if you initially ditch all the pasta/bread and feed them other carbs such as white rice, rice noodles, sweet potato, potato (skin removed, or baby new ones with skin on), as meals with those things will be "normal" to them anyway, most likely
.