Due to inequality in the world, if you have a lot of money and resources, others have parts of your soul. If you don’t have money, property or assets, you have parts of other people’s souls they need to pay you for.
Same with health. If you are very healthy, people who are sick have parts of your soul you can retrieve by helping them. If you are sick, you have parts of healthy people that they need and can get by helping you, healing you.