One could say Sebastian was anti-authoritarian. This puzzled him very much, since a person of his age was not supposed to behave like an adolescent kid any more. A sense of injustice, both common and personal, was still only too strong. For example, he felt his boss had never respected him too much, which was one reason Sebastian's disliking the idea of ever having another wage job.
When he was a child, Sebastian had always been a good boy. Well, mostly, but he never got into any real trouble with authorities. When other kids made a row or had their adolescent revolt against the teachers -- after some more successful attempts by the rowdier pupils, more sensitive female lecturers had left the class in tears -- Sebastian had always conformed. It was easy to manage through the education system when one let the others do all real thinking for oneself. Rebelling too visibly only led into trouble, it was too much effort. Now Sebastian felt he had really been in sleep through all these years, his real self never emerging.
Sebastian's grandmother was the real matriarch in his family, a woman with very strong opinions if not downright disciplinarian, and Sebastian gradually learned never to argue with her. You see, grandmother was a master in manipulating people with guilt, and Sebastian who disagreed with grandma's dominating manoeuvres was always duly informed that he was merely an "ungrateful child".