Don corleone...

I possess a naturally loud voice. Having been a teacher for long does not lessen the tenor! Often while debating / arguing the voice reaches a jarring crescendo! So much so I admire the soft -speaking ones!  
This morning I woke up to the soft tone of a young friend of mine. I asked him if he ever raised his voice.
His simple answer - why raise the voice ever? 
Such confidence from a youngster. 
Don Corleone never raised his voice. So would I learn or rather unlearn? Eeks why am I screeching?