Analyze the tweet "This is the first time I've been sober on my birthday in 6 years. #recovery #sobriety #sober #soberissexy #sobernative" and indicate which emotions from the list (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) are expressed. If no emotions are found, answer with "neutral or no emotion".
joy, optimism