Determine the emotional tone of the following 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...". Use the provided emotions: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. Respond with the emotions you identify or "neutral or no emotion".
fear, pessimism, sadness