Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: “Winners are not afraid of losing. But losers are. Failure is part of the process of success. People who avoid failure also avoid success.'
This tweet contains emotions: 
fear, optimism, trust