Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: @PeteSpencer007 Are you always so relentlessly positive? Your constantly cheerful optimistic disposition starts to grate after a while.
This tweet contains emotions: 
optimism