Cannwarren. You're in good company--this kind of thing has happened to many people on their weightloss journeys. What's key, I've found, is to first figure out how the slide happened. Then you have to figure out how you can prevent it from happening again. On SBD, what usually happens is that you go off plan and the sugar cycle keeps you from getting back on--the withdrawals in P1 are hard and it's easy to give up. It's also easy to convince yourself that you're giving up so much when you're on plan. The truth is, you're giving up even more when you're off plan...your health, your (true) happiness, your ability to enjoy tons of things (from sitting comfortably in an airline seat to playing with your kids), and, quite possibly, your life.
Being back on plan is its own motivation, IMHO. You feel SO good when you're back on plan that it's hard not to keep going. Getting there is the hard part. Personally, I found that when internal motivation didn't work, external did. I'm a people pleaser, so I joined my local nutrition clinic, where I went for weekly checkups, and had to fill in a daily food diary. Facing the music each week made me much more motivated to follow the plan. It took a while to get back on track, but I'm there and losing more every week.
I gained back 40 of the nearly 130 I'd lost. If I can lose it again, so can you...especially with only 25 (good for you on keeping nearly 30 lbs off!!!
)!
Here's another thing that totally motivated me: someone posted an online site where you could put in your current and goal weights, and it would show you what weight you would be at if you lost 1/2 lb a week (or more). I couldn't believe how long it would take for me to lose it if I only lost a lb a week. It made me realize I had to get going on it, or this thing would be with me forever!
Once you've got some kind of motivation in place, set yourself up for success in Phase 1. Make sure you do it on a week when you don't have any reason to go off plan (no birthdays, celebrations, business dinners out, etc.). Throw away everything that isn't on plan in the house (or give it to a friend). Fill the fridge and pantry with good OP stuff. Figure out things to do to distract you when you get the muchies. Plan on taking it easy so you don't stress yourself during the SBD flu. It shouldn't take more than five days to get rid of the cravings. Then you're good to go!