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: Focus on yourself. Don't let other's love define you when you're happy and don't let it make you bitter if you get hurt.
This tweet contains emotions: 
love, optimism, sadness