A Workover: Still in his 20s, he fears he's reached his career peak

A college grad in biotech has stayed stuck in a just-okay job for a few years and is told that the competition for moving up is very tough. He fears that even though he's still in his 20s, he's not going to make further career progress. 

That was the concern of a caller to my radio program. The transcript of our exchange is my PsychologyToday.com article today.