<prompt> Human: Have 825 credit score, use AMEX for work related expenses, and occasional purchase for home. Pay off balance each month too.Went from 8k to 15k line of credit without asking for it. Any reason to trim it back down? Best to leave it alone?  <response>: It will lower your utilization which will help slightly to improve your credit score. Unless theres some reason you dont think you can trust yourself with the new credit limit, just let it be. 