If you know how to sharpen your language power, that is good for you.
Language is a source of power. A mastery of language gives you power.
Words have power. Therefore, you must choose them with care, and learn how to put them together in a way that you will get the desired effect.
By choosing the right words, and putting them together rightly in sentences, you can get what you want.
By the same token, by choosing the wrong words or failing to put them properly in sentences, you may miss what you want.
The trick is to know the words that will bring you the desired results, and to put them together in a way that they will touch the heart and mind of you target listener.
You will get what you want.