self-possession

noun
UK /ˌself pəˈzeʃ.ən/
US /ˌself pəˈzeʃ.ən/

The ability to stay calm and in control of yourself.

She answered the difficult questions with remarkable self-possession.


OTHER MEANINGS

2. The state of owning or having something yourself.

The self-possession of the land gave the family full rights to it.

3. A calm and confident manner that shows you trust yourself.

His self-possession impressed everyone at the interview.

4. The quality of not being easily upset or shaken by others.

Even during the storm, the captain showed great self-possession.