I've bought the packs but can't seem to find the courage to start. I lost three stone three years ago on the Cambridge diet but have put it all back on again. I know I have to do something right now but the thought of starting again is so daunting and I'm ashamed that I'm back at square one again. How long will it take me to lose three stone again I can't face going back to a councillor so I have decided to do this alone. Any advice would be really appreciated.