Reincarnation...

On higher levels the process of evolution takes place as an unbroken continuity of conscious awareness. At Earth level however, the difficulties of Earth life and the physical aging of the dense Earthly body place limitations on the length of Earth timespan during which we can tolerate life. This in turn necessitates that we "die", review our life from a higher level, then return for another cycle of birth and life. This cycle of birth and re-birth is known as reincarnation.
Reincarnation is a cycle of birth, death and rebirth undertaken on lower planes such as Earth, in which we pass from spiritual realms down through the Veil to those areas of dense physical incarnation cut off from direct contact with the Higher Realms. We do this in order to learn "in isolation" the type of lessons which can only be learned in such worlds. Each lesson must be thoroughly learnt, and the Law of Karma requires that we repeat this process of reincarnation until we have mastered the particular lessons involved at this level.
Earth is a school, and you learn even when making mistakes. If you face a test and fail, you have to take it again. So if you have lessons to learn in one life which you fail to learn, then in another life you will be presented with those lessons again; for you cannot progress -and all life is an upward progression, an upward spiral -until you have learned those lessons.
You have a test to pass, one which you have set yourself to accomplish. When you pass depends upon the effort you make. If you do not pass the test in one experience you will have other chances of doing so. You will always find fresh opportunities opening out before you. In time you will accomplish what you set out to do, however many distractions may deter you from your object. The power of the Spirit can and will win in the end. It is like a powerful magnet drawing you on. It is the effort that counts; the responsibility is yours, no other can accomplish your mission for you. The scales of Divine Justice are accurately balanced, there must be nothing owing if you are to progress.