Conventional science has a running debate over which is more important, environment or heredity.
This is typical of the dualism that pervades our civilization. If you just meditate on this question about your own life, you will discover something in you that is certainly neither of these two most powerful forces. However, it is very subtle and would be apparent only to yourself. This is one of the ways to become aware of the spirit in yourself, where you are your own Being and not that of either your parents or your surrounding circumstances.
When you awaken to your own spirit, you can discover in this contemplation that you have pre-existed and that you will live again. This discovery will enable you to rise above the small ego that makes you so insecure and fearful.
www.classicinsights.com offers courses that will help you to get over your fears and insecurities by becoming much more aware of your true self. The courses that most directly deal with the issues of environment, heredity and your spiritual self are:
Course # 3 Lincoln http://www.classicinsights.com/courses/course-descriptions/81-the-destiny-of-abraham-lincoln
Course # 17 Bhagavad Gita and Self-Education http://www.classicinsights.com/courses/course-descriptions/95-the-bhagavad-gita-and-self-education
Course # 21 Understanding the Modern Ego http://www.classicinsights.com/courses/course-descriptions/99-understanding-the-modern-ego


These are not the best questions to ask. The question should be, “what is Human Consciousness?” The Human Being has its own special spiritual, creative, self-conscious awareness that is capable of achieving higher and higher levels of consciousness. This level includes the doing, not just the feeling and the thinking.