Some people can born with the unimaginable skills like being very smart, solving the problems very fast, can be able to to the processes very fast like multiplication or division in big numbers or can thing forward in the mind games like any kind of skill people can born with there is a lot that we can not write all. Theese people are ones who born with theese skills and this kind of people who born with theese skills is harder to become uselless when that people do not use that skills.
Also some people are born with normal like the high percentage of the all human population in the world. That kind of people who are doing and trying to improve theirselves has some kind of skills too but the ones who get their skills with the other facts and with their own have more chances to become uselless when they do not use their skills for a specific time which chances according to the people. So also with theese kind of people need to improve their skills.
So as a result some people can born with that skills and they do not need to work on theese to much because there is less probability to become them uselless but some people have able to win theese ones with the outher factors and theese ones should be work on to improve theese skills to do not make them uselless. Theese both people are ways to innate or gain them buy themselves.