Slimming down is somewhat like boating. You set your course toward a destination (your goal weight), propel yourself with the right fuel (diet and exercise) and end up on an island paradise (in a bikini!). But the tiniest leak in your ship could sink your efforts. We’ve uncovered 10 sneaky ways your workout, your work habits and even your clothing can undermine your diet, and we devised easy fixes for each. Spot what’s holding you back, try our tips and set off toward your ideal body. Then slip into that swimsuit and enjoy!