The main objective of this research is to investigate adolescents' perceptions concerning professional interests and preferences. Nowadays, a major problem of the teenager is the choice of career path to follow. Vocational identity is an important aspect of individual identity that adolescents explore and are asked, in high school mainly, to choose an orientation group (general high school) or sector (vocational high school) and consequently the subject of study and field of work. Their decision to choose studies and profession is not easy. The teacher specializing in Counseling and Orientation has the opportunity to help adolescents to understand their personalities and interests, combining Counseling and the use of appropriate psychometric tools. The qualitative research, in which 19 students of the Third Grade of Lyceum participated, showed that they discovered, confirmed and reflected on issues of their professional identity, using the Holland Personality and Vocational Guidance test.