Task: Analyze the tweet's sentiment and assign it to either 'neutral or no emotion' or one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: #Question of the #day: what are some of your #nervous #habits? (biting fingernails, tapping your foot, clenching your teeth...)
This tweet contains emotions: 
fear