Various things keep me going - I've told all my work colleagues I'm doing SW but none of my actual everyday mates and so in one respect my workmates are keeping me going by constantly asking how I'm doing/motivation by fear of failure or embarassing myself in front of them if I give up and I'm keeping myself going with thoughts of how some of my friends I only see a couple of times a year are going to react the next time they see me.
Thinking of all the lovely clothes I'll be able to buy once I'm slimmer.
Knowing that the next time I go to the doctors/family planning clinic I'm not going to be patronised and told off like a little girl for being overweight even though the reason you're there in the first place has sweet FA to do with your weight (eg going to a doctors for eczema or antibiotics for a virus etc).
That self conscious feeling I have now when I'm out in public, with a big red face, trying to do exercise - all those people staring at me, well soon they won't be thinking haha look at the whale, they'll be thinking wow look at her go!
But most of all what keeps me going is knowing that I'm doing something for myself for a change - knowing that I WANT to lose weight and BELIEVING that I can and will and being fully prepared to make huge sacrifices in order to achieve my goal, and that knowing that I never want to go back to how I was before, embarassed on aeroplanes, unable to find clothes to even do exercise in, full of self loathing, comfort eating and apathy - the old me is dead, long live the new me!