Do your current tasks carefully. Many words, many matters, many people - just listen. There's no need to take it too seriously or dwell on it for too long.
Regarding that incident from yesterday, it also made me understand that sometimes people really prefer to see others suffer. When others are in pain, they become happy. Because that pain is on others, not on oneself.
Don't feel uncomfortable. Human nature is just like this. Why bother to worry about it? Give it more time and it will get better gradually.
