Determine the valence intensity of the following tweet, considering the mental state of the author. Assign a real number between 0 and 1, where 0 denotes extremely negative and 1 denotes extremely positive.
Tweet: I feel exhausted ...\nI tried to do a good job, but apparently God does not see me right. I'm weary! I EXIST! 😟💔📢\n#exist #weary #misonorotta