He who practises concentration will possess very clear mental vision. What was cloudy and hazy before becomes clear and definite now. What was difficult before becomes easy now. And what was complex, bewildering, and confusing before comes easily within the mental grasp. You can achieve anything through concentration.
Nothing is impossible to a man who practises regular concentration.
It helps the scientists and professors to do great research work. It helps the doctor and the lawyer to do much work and earn more money. Concentration bestows serenity or calmness of mind, inner spiritual strength, patience, great capacity to turn out tremendous work, alacrity, acumen, agility, beautiful complexion, sweet voice, brilliant eyes, powerful voice and speech, power to influence others and attract people, cheerfulness, joy, bliss of soul, supreme peace. It removes restlessness, agitation of mind, laziness. It makes you fearless and unattached.