Mind becomes unbalanced and you lose control over your sense of logic.
You are not able to appreciate other's point of view.One can lose a friend or a relation.
On the other hand, soft spoken and sweet tongued person is always successful in day today life. A bitter tongued person is always a loser.
Cultivate the habit of speaking in soft tone.You shall acquire a blissful mind and gather admirers all around you.'
"To speak and to speak well are two things. A fool may talk, but a wise man speaks.