due to illness, ive piled on 5 stone and im so miserable..I take a size 20/22 and I cant bear to look at myself in the mirror anymore..I think lighter life might be good for me as I have issues with food, I comfort eat etc..but at the same time, im a bit scared of the ketosis thing ive seen mentioned..ive got a place on a course booked in 3 weeks..has anyone done it?