This card is about priorities, perceptions and reality. You probably have unclear perceptions, or you might have unrealistic dreams.
When you envision your potential, you tend to set unreasonable goals. Setting high goals may not be a bad thing, but sometimes if a goal is too high, it can hardly be achieved. Unrealistic goals or unclear thoughts, will lead to mistakes and disappointments. You will need to alter these perceptions, then you will discover your priorities and authentic values.
The reversed card shows that you might have underestimated your potential. You will need to rediscover the authentic self.