The following characteristics apply to Jeff Bryden:

He was a very hard worker$-$he modeled the way.

He taught me the importance of building strong personal relationships with all clients.

He avoided giving me advice on how best to deal with specific clients preferring that I work own.

He was a very serious and business$-$like individual

He taught me to not take myself too seriously

All of the above

$A,B$ and $E$ only