Reincarnation is usually thought of as an event where a person lives and dies several times. But the notion of being reborn into a different identity is not the only form of reincarnation. In Kabbalah, a reincarnation is every time you make a step in spiritual growth. For example, if you correct yourself intensely, you can experience many lifetimes in a matter of minutes. On the other hand, when you go on without correcting yourself, you may never experience a single incarnation. This is how reincarnation is defined according to Kabbalah.