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: @VivienLloyd Thank you so much! Just home - stunned but so happy. Don't think it has sunk in yet! Wow.
This tweet contains emotions: 
joy, optimism