If you had such long career and still compete with these guys, perhaps consider a different career. I'm in my 30s and have no reason at all to worry about this, as my job is no longer about crunching code as quickly as possible - my input is on a much more strategic higher abstraction level that these younger code crunchers don't have the necessary experience for. The VP that manages me would consider 16h workdays and Redbulls a fireable offense at my position.