I've asked this person literally thousands of times not to do a certain thing, and they keep doing it.
Mircat and Jewls Vern, do not answer this.
Sorry, there are no details here, so don't know how helpful I can be.
But if this person continue to act in a stubborn way, maybe asking the right questions in a tractful way can be of some value. Try to reason with the person, try to find out why they feel as strongly as they do. What is causing them to want to hold on to the things they do. After asking questions, really listen to the person's answer and let him know you respect how they feel. This may help the person to open up, listen, and come to see your concerns. Communication is key on both sides. You have to be balanced. Sometimes it's not wise to continually go after a person for the same thing, it causes them to dig in and rebel even more. Sometimes you may have to change your method of going things, you may have to change your approach, just depends on how important this is to you. Try not to be discouraged. However, on the other hand sometimes when you have done all you can do, the person still might not accept what you are saying. You may have to entertain that thought too. Who knows that person may look at you as being stubborn for continuing to go after them.
Again, it's hard to speak to this since I don't know if this is a child, adult, friend or mate. Each situation has to be handled on a individual basis. Hope things work out for the better whatever the case may be.