Lauren!
I think one of the best ways to keep yourself on track is to sit down and brainstorm a list of all the ways things didn't work out before. Then figure out what you could do to prevent/deal with each of them. If you found yourself eating bad stuff because you didn't have easy to prepare healthy stuff around, then make sure you do and that the bad stuff isn't around, etc.
In addition, once you reach P2, you can make ANYTHING (except for things that call for carmelizing sugar) in an SBD-safe way. If you can't figure out how, please post a thread with what you're craving and I'd be glad to help you figure out how to make it. That's what's worked well for me with SBD. Sometimes, the SBD version just takes so darn long to prepare that I don't want to bother, but knowing that I COULD keeps me from feeling deprived.
Tifanicole, I

your sig quote...that movie is one of my favorites of all time. I forgot that quote and it's a really good one.

Thank you for reminding me!
As to the size 6 and pound thing--try to be honest with yourself about how you FEEL and how your body feels--what works for one person might not work for another--but if both people feel and look healthy, no one will see the difference in pounds, you know? The truth is, a numerical weight looks TOTALLY different on each person, even person of the same height and type of body frame. I guess what I'm trying to say is to keep in touch with your body and how you feel and look...you may find that you're thrilled with how you look at 140...or 135 might end up not being the right weight at all. Just make sure that you aren't killing yourself over a number, okay?
That said, be aware that it's not just about losing weight to get to a certain size--you can stay 135 and be all sorts of sizes based on the amount and type of exercise you are doing. Our wonderful moderator Meg points out that she got to her goal weight and after a couple years of holding that same weight, she found herself able to suddenly fit into a size 2!!! She'd continued a regular routine of strength training and cardio for those years and all that work paid off in a much tighter, firmer body! (I've met Meg in person a couple of times and she's gorgeous!!!

) You'll find tons of links all over 3FC for the muscle/fat picture that illustrates how a pound of muscle takes up a lot less room than a pound of fat...and you'll see that it's not just how much you weigh--it's what your weight is made up of, as well!

In addition, muscle burns many more calories than fat, even while you sleep...so the more muscle, the better! To gain that muscle, make sure you get enough protein (your body 'eats' muscle and organs to get the protein it needs if you don't get enough through food) and make sure your exercise routine involves strength training.
Hope you have great success this time 'round!