Restraint

It takes years to build up trust,
and only seconds to destroy it.
- Anonymous

If you are patient in one moment of anger,
you will escape a hundred days of sorrow.
- Chinese Proverb

When restraint and courtesy are added to strength,
the latter becomes irresistible.
- Mohandas (Mahatma) Gandhi

When angry, count to ten before you speak.
If very angry, count to one hundred.
- Thomas Jefferson

Don't Criticize, Condemn, Or Complain.
- Dale Carnegie

Further reading: The Golden Rule

Listen, Really Listen

Being Kind

Say with Kindness

Anger

Trustworthy