Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
Tweet: #twitter #users Tweeting on twitter is like playing a game against the computer. Where's the life, Everyone too #afraid to say something?
This tweet contains emotions: 
disgust, fear, pessimism