Task: Analyze the tweet's emotional expression, classifying it as 'neutral or no emotion' or as one or more of the identified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best represent the tweeter's emotional state.
Tweet: Believing in yourself is key in attaining what you want in your life. #start believing in yourself
This tweet contains emotions: 