A good consultant puts him or herself out of business. Go in, apply the skill set necessary (hopefully they are learned by someone who stays behind) and leave. Sticking around is wrong.
The worst thing that a good consultant can to is make him or herself indispensable.
I know plenty of bad consultants: they become the “data expert” or that one person who just knows how everything is put together– indispensable.
I’m trying to get back into good consulting again– trying to not be indispensable. Back to basics– learn my chops.
Musicians know that they have to get back in there and perform every once in a while. Practice is fine, but you have to play with a band, make your mistakes and learn the hard lessons, no matter whether if it’s straight blues or show tunes.
Being inconsequential but contributory.