Half an hour of listening is essential except when one is very busy.  Then, a full hour is needed.

From Isaiah 41:1:  “Listen to me in silence, O coastlands; let the peoples renew their strength; let them approach, then let them speak; let us together draw near for judgment.”

From 1 Thessalonians 5:16-18:  “Rejoice always, pray without ceasing, give thanks in all circumstances; for this is the will of God in Christ Jesus for you.”