Hiya,
If you want this bad enough then you can do it. I'm on the 1200 plan and already I have learnt so much about food choices and feel a million times better. I'm nearly 2 stone down out of a total of 9 stone and wouldn't get off of this diet at all.
So what I'm trying to say is don't think you have to go straight back into SS, you have all the other plans where you can still eat conventional food alongside the shakes etc.
There is a post on here about 50 reasons why to loose weight and I added a few of my own, printed them off and carry them around. So when I have a bad or wobbly moment I read them and it gives me a much needed boost.
All the best for your journey, plus come on here a lot and you'll pick up tips etc. xx