It's been a while, but my understanding was that it was pretty generic success across significant goals. So that would range from financial success to curing measles.
High disagreeableness means being able to dismiss most people, because most people will tend to pull you in towards a regression to the mean.
Low neuroticism is about stress tolerance. Doing anything major/new/difficult is stressful.
High conscientiousness means you spend time preparing, finish important tasks right away, pay attention to detail, and work well on a schedule.
It's hard to imagine being highly successful at much if you can't handle stress, are disorganized, and are very sensitive to others trying to tell you to do what everyone else does.
High disagreeableness means being able to dismiss most people, because most people will tend to pull you in towards a regression to the mean.
Low neuroticism is about stress tolerance. Doing anything major/new/difficult is stressful.
High conscientiousness means you spend time preparing, finish important tasks right away, pay attention to detail, and work well on a schedule.
It's hard to imagine being highly successful at much if you can't handle stress, are disorganized, and are very sensitive to others trying to tell you to do what everyone else does.