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: Halfway to work and I realize I forgot to put on underwear....It's going to be one of those days! #mombrain #toomuchgoingon #longday #breezy
0.463