You have lived multiple lives. At times you have been rich, poor, a servant and a slave. Maybe even a King or a Queen, at the least a member of the minor nobility.
You are interested in this topic because you know, in your heart, that we are not merely chemical elements that dissolve with death. There must be something more, you know this, because of your own intuition, experiences and beliefs.
To learn more about reincarnation, your life and place in the spirit realm, read this book
My book to teach you how to ascend in your current life, so you next life will be fashioned more to help you with experiences, instead of harsh lessons: How to Live – Inner Peace through Spiritism