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: Sometimes I can't believe I've made it this far.169 days!! I threw out my demons n got #sober #clean, n started #recovery.#Sobriety is #2.
This tweet contains emotions: 
joy, love, optimism