Why Is Past Life Regression So Beneficial?

There is no denying the fact that the belief in past life, or reincarnation, is prevalent across the board in almost every religion, from Christianity to Hinduism to Buddhism to Kabalah. And the interest of humans in knowing as much as possible about their past lives is also quite widespread. But how many of us are interested in knowing about our past lives in order to make a positive change in our present lives?