Om Swami
Why should I stop thinking and speaking badly about other people?
Thinking badly of others damages you
The mind has a natural tendency to gravitate towards negativity, and the person you think badly of is not even aware of it. You are causing yourself much greater damage, which is totally unnecessary.
They don't even know you are thinking about them, or even swearing at them. They are not aware, but you are causing yourself much, much greater damage, which is totally unnecessary.