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: Difficulties, by bracing the mind to overcome them, assist cheerfulness, as exercise assists digestion.\nChristian Nestell Bovee #quotes
This tweet contains emotions: 