May be he was lucky and it worked for him. I am not sure that would work well all the times. It is not necessary that the skills you acquire working harder woul

May be he was lucky and it worked for him. I am not sure that would work well all the times. It is not necessary that the skills you acquire working harder would make you still relevant (as tech lead or manager) when you are in your forties and fifties. At the same time it is no guarantee that you would still be employed in the same organization where you worked hard during your twenties and thirties. I think not burning out, being healthy, staying fit and to never stop learning would work better.