Excess of emotion with its loss of balance affects the breathing and play of the voice.
Exertion, trying effort, instead of easy, happy activity induces hampering rigidities.
Intensity, over-concentration, or rather false concentration, emotional tension, involves strain, and strain is always wrong.
Over-conscientiousness, with its fussiness about petty detail, and insistence on non-essentials, is a deterrent from which the robust are free. Over-attention to the mechanics of voice production is a kindred deterrent. Both deterrents prevent that prime characteristic of expression—spontaneity.
Anxiety is a great contractor of muscle, a great stiffener. Anxiety always forgets the power within, and falsely says to the song-hunger, "You shall never be satisfied."
Self-repression is a great deterrent that afflicts the more sensitive, particularly those of puritanic inheritance. It is a devitalizer and a direct negative to expression, which is vital, is life.
All of these deterrents are negative and may be overcome by fuller recognition of the inner power that by its very nature must perpetually seek positive expression.
CONCLUSION
In conclusion, the student can perpetually find encouragement in a number of happy facts.
Man is endowed by nature, except in rare instances, with a perfect vocal apparatus. When abnormal conditions are found they are usually in the adult voice, and are due solely to misuse. In other words defects are not inherent but acquired and can be removed.