Lester is 14 years old, and has started the long journey of figuring out what sort of career he will be interested in. he is using his current identity as a source of ideas about careers, thinking about things that he enjoys and is good at. according to donald super, lester is in the phase of career development.

   Crystallization

Explanation:  When adolescents start thinking about their future careers, they explore what they would like to do based on their skills they believe they possess, their personal preferences and interests. It is a period of crystallization in which the clarity of what is desired is emphasized on the basis of a mere conviction of one's skills and abilities. It is a period that precedes the specification period, when individuals acquire the knowledge and experience needed for a career.

During the crystallization period, adolescents clearly separate their awareness of what they are and what they are not. Based on that clear determination of what they want in combination with their potential abilities, they determine what their careers will be and continue into the specification period thereafter.