Sometimes we disagree. That's totally fine. We see the world differently. We have had a million and one different interactions to each other to get us to right here and now. 

1. Don't take it personally  

2. Let go with grace  

3. Ask questions to find out more

4. Communicate disagreement (it's not personal so its ok)

5. Take on things you are responsible for and let the others go

The number one rule here is don't take it personally!