Recalled here:

“When you have worked through it, by further reflection and some decision as to the immediate future it will turn into something like a path marked on a map, to be followed for a good while and possibly for the rest of your life. To put it another way, you will have made a Self, which is indeed a desirable possession. A Self is interesting to oneself and others, it acts as a sort of rudder in all the vicissitudes of life, and it thereby defines what used to be known as a career.”