We can make rules for ourself and it can be useful to set boundaries in certain areas of our life but possibly one of, if not the biggest lesson I'm still learning is that not listening to our intuition, our "body wisdom" or gut feeling can result in disaster. The ego, whatever that is... our conscious mind? can be our own worst enemy, particularly when it overrides our intuition.
The author Stuart Wilde wrote quite clearly about this in his books. He clearly delineated between our subtle feelings and emotion, with emotions being driven by the mind and feelings being driven by inner wisdom. People call it willfulness or being head strong when we choose to follow our heads rather that the often more subtle messages from our soul.
The difficulty in following our inner voice occurs when what it is communicating is not convenient to our outer selves or not the direction we want to go. This is where it is so important to be quiet enough and humble enough to let go of our ego's preferences and listen to what our internal.wisdom is telling us, and do our best to follow it.
Experience has taught me intuition knows best, but I still override it at times, always to my later regret.