When a circus tight-rope walker rehearses their routine, they use a net to catch them if they were to fall. It gives them the confidence they need to perfect their skills without having to worry too much about it. You may still be using the equivalent of a safety net with something you have become quite proficient at, dear Gemini. You may even recognize that you don't need it, but theremay be a tiny voice in the back of your mind telling you that you may fail. You won't. This isn't a physical danger, but too much reliance on that safety net could eventually erode your confidence.