You have come to the right place and your feet are on the right path. Give up the commercially prepared foods. Start eating real food that you prepare yourself so that you know exactly what is in it.
Stop obsessing over the scale. I wouldn't weigh more than once a week, and think you should consider weighing once a month or less. Get your body healthy with good food first. THEN worry about the number on the scale. You say you gave up Atkins after only one week because you lost only one pound. You can go up or down several pounds from day to day, almost hour to hour, based solely on body hydration and gut contents. Take a longer view. If you decide to try Atkins again, do it for at least a month and take into consideration not just the number on the scale but also how you feel--is your health better? is your energy up? has your mood improved? When Jimmy was in his first year on Atkins, he had one period of time when the scale didn't show ANY weight lost for about 10 weeks but he lost something like 5 inches off his waist in that time. (I probably have some of the numbers wrong on this, I'm going from memory, but the general idea is there.)
Stop eating harmful foods completely - no little cheats. The big three are grain, dairy, and soy. MANY people are intolerant of these three types of food and don't know it. And if you are eating them it can prevent you from losing weight.
Eat to satiety. Stop measuring, weighing, etc. Allow yourself to feel full--not all the time but at least once a day. You can reach that feeling best with protein and fat.
Educate yourself. Jimmy has produced more than 400 podcasts. Download them from the iTunes Store (they're free!!!) and listen to several each day on your commute or while you are doing chores around the house and yard. I also recommend Robb Wolf's podcasts and book, and Kurt Harris's blog at: http://www.paleonu.com/
I hope I haven't sounded too bossy here, but I just get the feeling that you are flopping around from one thing to another like a rag in the wind. Figure out the most important things for your health and stick to them long-term.
And keep coming to this forum