The meaning depends on the color, condition and general appearance of the briefcase. As a general guide: A well-worn case predicts business success, and a new briefcase is a warning against making changes or decisions without adequate investigation. A full briefcase is telling you to pay more attention to your personal affairs, and an empty one predicts success with your current plans. To lose your briefcase forecasts an unexpected profit, but to find one suggests that you must watch your step very carefully indeed to avoid a business disappointment.