Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
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