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: •Days!'\nHe was itching for a fight..itching for the exhilaration of battle, of almost getting defeated, the adrenaline pumping•\n@RojinHitto
0.621