Total conjecture. I'm not even going to try to pass this off like I have "sources." It's conjecture based on experience and observation though. I also did not invent this theory.
I spent 40 years in the corporate world, and I saw very few wheeler-dealer party-goers reach the top. Most of the people that I saw reach the top did well in school, worked (and still work) long hours, and spent considerable time politicking to impress those above them. They simply did not have the time to "party on."
Note: Politicing is a poor choice of words becasue it has a poor connotation. But, if you want to reach the top, you are competing with others who want to reach the top, and they are just as good, if not better, than you are. You have to do something to get the attention of the people in charge.
Total conjecture. I'm not even going to try to pass this off like I have "sources." It's conjecture based on experience and observation though. I also did not invent this theory.