JANINALITTLEWOLF - It is usually because there is so much we do not know about ourselves consciously. The tears are a bit like the string that Theseus went into the labyrinth, laying out to find his way, and killed the Minotaur.
But in your case you need to follow the string of your emotions, then you will find enormous amounts of you were hidden. But of course you need to not be afraid of feeling deeply. If you could sit with someone sympathetic and allow your feelings and say whatever came spontaneously perhaps you would find a treasure within you. You do not need to think or analyse, but just mention whatever is brought up.
Tony