“… We cannot stop others from being rude — but we can change how we react. …
Here’s a short guide to reacting peacefully:
1. When you notice yourself getting offended, frustrated, angry, irritated, disappointed … pause.
2. Don’t act.
3. Examine the idea you have about how they should act.
4. Toss your expectation into the ocean.
5. Smile.
6. Act with compassion. …”

 The Other Person is Never the Problem : zenhabits