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: My heartbeat is forever stumbling on memories of things past. #longing #loss #shape #form #sadness
This tweet contains emotions: 
disgust, sadness