New? Stuck? The First 3 Weeks Are Most Important!

So does that mean also cutting out things like sweet potatoes for those three weeks? Can I put them back in after the three weeks without gaining that weight back? Does that also include cutting out fruit?
I carry my weight in the middle. Low carb diets do work for me. I've just always struggled with what to do after I loose the initial weight from that strict phase. Where do I go from there? I also have quite a sweet tooth.
Will my body have enough energy to get through the 1hour workouts that I am currently doing 6day/week?

@lcallbaugh
I'm not sure how much weight you have to lose. Each person is typically a bit different because our bodies are different. You can keep sweet potatoes if you want. You can keep anything you want...but remember what goes in, must get burnt. And if it doesn't it gets stored. And also remember that the faster you see a difference, the more fired up and motivated you are gonna be!
My strong suggestion if you have more than 20 lbs to lose. Cut out sweet potatoes. Only eat fruit in the morning (so your body can burn it off because they are simple carbs). If you have a sweet tooth, think of that as your sweet treat for the day and eat it before 3-4pm. Your body may lack some energy, but it will grab it from the fat - in fact, that is what you want to do. Eat some veggies, chicken, fish and get your energy from that. I always suggest some caffiene (non-sugar drink) before a workout. This is truly up to the person and how they handle this - but I drink a "pre-workout" shake before 5 of my 6 workouts each week. The energy rush is amazing and I don't experience a low. But *thinks, here is the disclaimer* check with your physician. ;-)

And yes, you can put some of that back into your diet in moderation after the weight is lost. I did. Problem is, sometimes we start putting stuff back in - and then moderation goes out the window. My two pennies