What about the many people who are passionate and who do practice quite a lot but don't really take it that much further. For example, in track and field there

What about the many people who are passionate and who do practice quite a lot but don't really take it that much further. For example, in track and field there are people who are really into it and who run all the time. Or any of the other hobbies that people are into but they never get better than certain levels.