Take it a day at a time. Healthy
weight loss is not about how quickly you can lose weight, but it's about changing your eating habits and incorporating some form of exercise so that over time, your body weight will decrease naturally. So be patient with yourself and try not to get frustrated when things don't go well. You'll eat healthy a few days then you may have a day where everything you eat is totally wrong. But guess what? You're still on a diet!
The diet don't stop just because you ate bad that day. Just start back eating healthy again according to your plan. Good example was last week when I had a bad day and just ate anything and everything wrong. So what? I just said "whatever" and my next meals after that were healthy.
So I would say to you and anyone who's getting started is to have patience when trying to lose weight. Take baby steps so you can let your body adjust to change. If you don't exercise, or is not an athletic type person, don't try to jump into strenuous exercises from the get go. Ease into exercises by just doing some stretching and flexibililty movements for a couple of weeks. Then later add some walking after stretching. As far as diet, read the plan in your book and follow it. Don't try to create your own version of the plan (that's why you chose the plan because you see it fits you), but do it to the tee. For weight loss, make small goals. Try making small goals like lose 1 to 1.5 lbs a week for a few weeks. Then bump it up a bit later on. Trust me, the same thing you did to lose 1 to 1.5lbs will most likely be the same things you'll have to do to lose 10 to 50+ lbs...which is maintaining discipline.
Sorry to be long. I wish you well and I'll be praying for you on this end. You can do this!!
"Junk food is one of those phenomenons where it taste good to the tongue, but once it gets in the stomach all hell breaks loose!"