Task: Examine the tweet to determine its emotional content, assigning it to 'neutral or no emotion' or one or more of the listed emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best describe the tweeter's feelings.
Tweet: Negative self-talk in #depression can extend to sleep, with catastrophic thinking about the impact of poor sleep fueling insomnia.
This tweet contains emotions: 