'Mary Sue' is a an illness of 'thinking oneself is the main lead', we all suffer from it. Don't be alarmed about it being infectious, it is only declaring the start of growing up. This is a story of the growth of a little girl, perhaps this is also your story. She is Xia Nu, Athena, Tsukino Usagi, Flower Angel*, Siri Tachi, Madame White Snake…..
She thinks that everyone loves her, the world is waiting for her to come to the rescue. Yet she never expected that this world couldn't be saved by anyone, the only thing she could do, was to grow up. Peter Pan has finally walked to the end of childhood, the time of youth is standing at the end of growing up and looking back, the rough and bumpy road has finally turned into flowers in full bloom.
*[Xia Nu (it can also mean a female fighter/warrior) – A Touch of Zen, Tsukino Usagi is from Sailor Moon, Flower Angel is from Hana no Ko Lunlun, Siri Tachi is from Star Wars, Madame White Snake is from New Legend of Madame White Snake.]