Related:

• You probably wouldn't worry about what people think of you if you could know how seldom they do.
  -- Olin Mille...
• You probably wouldn't worry about what people think of you if you could know how seldom they do.
  -- Olin Miller....
• Edelstein's Advice: Don't worry about what other people think of you -- they're too busy worrying about what you think of them.
• Think much, speak little, and write less. However, if you are going to write
  it is well to write what you think people think you think rather than what you think, because people have no idea what you think, and likely as not, are uninterested....
• Don't worry over what other people are thinking about you.
  They're too busy worrying over what you are thinking about them....