SimchaMinute by Rabbi Avigdor Miller
There is a way, and that is to study the right kind of sefarim. We have baruch Hashem books that deal with these subjects. But these books have to be studied sincerely...
In order to work on middos, a person must first know which qualities of character are most important for him. It’s not the same in everybody. For this you have to go for an expert and there are very few experts... — Prayer in Prosperity (#60)