Fix it, change the situation. I associate it with the speech of a child. I can just hear a little tyke saying to his father, "Make it so it doesn't hurt any more."
Hi, Yes, I agree it sounds somewhat childish; therefore, I would not use it in polite company. It stands to reason that a doctor can help you get rid of your bad habit, but nevertheless I presume you should impress on him / her the sincerity of your request. No doubt trying to wean you off that habit requires your decisiveness first. However, your sentence shows you lack the c