Diet, schmiet. If you’re still struggling with those extra 10, 20 or 60 pounds, you’ve probably come to the same conclusion: Diets don’t work. That’s why at Green Mountain at Fox Run, a low-key, women-only health retreat in wooded Ludlow, the focus is on healthy, mindful eating, plenty of exercise and understanding the emotions that lead you to overeat. Instead of fussy size zero fashionistas, you’ll be surrounded by about 40 to 45 hard-working fellow females who all have similar goals — getting healthy and slim without tricks or shortcuts and staying that way for life. A typical day at the 26-acre retreat might include hiking in a beautiful, natural setting, Zumba or meditation, a cooking class, strength training and a workshop on staying positive.