Ten signs of good manners....

Yusuf ibn Asbat said:

There are ten signs of good manner, and they are:

1. Little arguing;

2. Listening well;

3. Avoiding searching for short comings;

4. Covering mistakes;

5. Finding excuses;

6. Patience when annoyed;

7. Blaming one's own self;

8. Seeking one's own faults rather than other
people's faults;

9. Having a beaming face with the young and
old;

10. Saying kind words to those who are below
or above one (with regards to religious knowledge,
righteousness, social status, and so forth).

[Al-Ihya, vol.3,]