I believe the Heart can make the wrong choice. You have to go with the Mind and experience. The heart, if weak, will make you go back to something that was never really good just to keep from hurting. The Mind wil help make the right choice, especially from experience. You know something was bad so why would you go back?
One way I believe to make a right choice is Time. If it something you want or need, sit on it for a little bit. The right chioce will show itself. If you jump on a quick choice it may be the wrong choice. If you wait you may realize it was the wrong choice or it may show its the right choice.