The physical traits that you really possess is much affected by Genetics. There is a slim chance that you will be tall if both of your parents are short. (unless there is a bloodline in either side of a tall trait) Environment on the other hand, would influence the behavior, mindset and attitude of the individual.

The difference between two individuals might create conflict but that is part of the sociological theory that shaped us. Even so, we still have to understand that we have different time-frames for growth. He might be CEO at age 27 but died at 30. The other guy might be CEO at 70. Everyone has their own timeline. This must not trample the idea that he is "first" if the success is achieved earlier. This is definitely not that basis.

Everyone has the capacity to learn. It is up to the individual how and what it takes. It takes the same boiling water to harden the egg and soften the potato. It is not always the circumstance, it is what you are made of.