"Maintain multiple independent identities" is extremely good advice.
As a student I had a moment when I decided that the standard geek "identity package" of things one was supposed to like and do was ... limiting, and that it would be better to have a wider set of interests.
Accepting the "package" is almost like embracing a cult, the cult of conformity, making itself easier to predict and monetize by the omnipresent algorithms of the tech giants that seem to have replaced god by a lot of data-crunching, leaving humanity to devise new schemes of control.
This is a rejection of the process of discovery of oneself and of a, somehow Nieztschean, independent and autonomous path in life.
Independent identities allow you to construct your being with many different fragments and melt them into one, like a Picasso painting or Vivaldi's Four Seasons play.
As a student I had a moment when I decided that the standard geek "identity package" of things one was supposed to like and do was ... limiting, and that it would be better to have a wider set of interests.