Worship: How should we pray?

Psalm 54 vs. 17

For he hath delivered me out of all trouble: and mine eye hath seen his desire upon mine enemies.

1. It was recently asked whether it is appropriate to pray loud to the hearings of our neighbours.
2. While the Bible encourages crying to God, the same Bible also preaches being at peace with everyone.
3. Your loud prayers should not constitute a nuisance to your neighbours.