While there isn’t any substitute for the diet and exercise you promised yourself you’d do six weeks ago, there’s a stock diet that will allow you to make huge progress in your equity portfolio. It’s called the SNaC Diet, and it’s the best way to get your portfolio in shape, even if you can’t seem to make progress in the campaign against your love handles. SNaC stands for Story, Numbers and Chart, and it’s the method I use to pick growth stocks for the Cabot Emerging Markets Investor.