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: @MHChat Childood experiences can  leave you with permanent deep sadness as adult  it can underlie everything #MHChat
This tweet contains emotions: 
sadness