How to Cultivate a Good and Pure Heart

The heart is where your impulses faith and rational mind compete to determine what you're going to do. Follow the model of King David who offered a seer prayer of Teshuvah of repentance when the flaws in his heart became clear to him. The Khidushi Harim said that a good heart can only exist when a person has no attachment at all to this world. Don't be clingy to the physical aspects of this world it's not your home let your rational mind combine with faith to help you see beyond the immediate temptation of gratification. And a final piece of advice is to learn Musar. This is a lifelong practice don't just passively wait for Musar lessons to come