Please analyze the tweet "There's many things I don't care about, and many things I do that I don't speak on because it's such a heaviness even when released..." and classify its emotional content. Choose from the following emotions: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. If no emotions are detected, respond with "neutral or no emotion".
fear, pessimism, sadness