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: I think learning classical or ancient Japanese might help me get myself permanently out of depression. I sometimes suffer from sudden
This tweet contains emotions: 
optimism, sadness, surprise