i did tony ferguson and lost 20kgs then put 15 back on. with any diet u cant just go back to eating like u used to when u get to ur goal weight. u need to just work on ur health over a long time not a quick fix. try adding more fruit, less fatty things and exercise more. it might take longer to keep the weight off but atleast there is more chance it will stay off. i have read and seen for myself the fast u loose the weight the quicker u will put it back on.