I would say that crying appears to be a necessary although not sufficient indicator for a life purpose...
I agree that you should dig deeper. Effectively battling a personal demon will be required to fulfill your life's purpose, but I don't think it constitutes a purpose in and of itself, particularly since it appears to be of little value to anyone else.
Stephen
Power-Book Library: Free personal development, success, inspiration and motivational classics Personality and Growth Bookshelf