Everything our soul has accumulated in terms of experience and feeling in all previous lives is stored in our subconscious.
The source of our feelings is ourselves, which is the sum of all our experiences in our past lives.
Because of this we have become what we are now, we feel what we can feel now with our day consciousness.
Each person has a unique emotional life of their own, built up through experiences in past lives.
This in turn makes each of us different from every other human being. Our soul contains our reincarnated emotional life, which is taken with each new life. This is gradual, however. When the soul descends into the fertilized egg, the consciousness is not yet at full strength, so the delicate fruit cannot be damaged. As the body grows, consciousness gradually awakens.
-The inner life returns to embryonic life. We also know that this inner life has lived before and has acquired several qualities in that life. Yet, and this is the wonder I want to explain, inner life retains all these qualities it has acquired in all those centuries. All those qualities of inner life will awaken as the material organism matures.
The Origen of the Universe p.238
-When the human being on earth wonders how he got all those qualities, then the life has mastered them in previous lives, and all of that has the purpose of awakening spirit- ually. We know that people have to master everything by experiencing it and learning it and that people also have to accept that all these characteristics cannot be mastered in a short earthly life. The soul needs thousands of years for that.
The Cycle of the Soul p.283
Source: Quotations from the books of Jozef Rulof