Task: Analyze the tweet's sentiment and assign it to either 'neutral or no emotion' or one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: @leighsteinberg April 25th, 2010 for me. Keep up the good work!! #sober #prouder
This tweet contains emotions: 
joy, optimism, trust