Then I agree. I just didn't see that word used in your response, so I misunderstood it to be without time limits.

(By the way, most people seem to use the word "young" meaning "age <= my_age" or later "age < my_age". Just ask a teenager whether twenties is young or old. Then ask a 50 years old person whether thirties were young or old. So an advice based on "while you are young" has very high potential to be misunderstood.)