Slim tone really is common sense which foods are good and bad for you. If you eat as naturally as you can and avoid foods with lots of additives and processing you are on the right track for long term weight loss. . Don't be too hard on yourself People who keep weight off have learned to treat themselves and not be too hard on themselves. Eating a Pizza or burger every now and again, is not going to make you suddenly jump hugely in weight. A treat such as this or times a week will not harm yo3.