Age of instability describes the Patrick's situation.
Explanation:
The post-high school years are known to be the age of instability because the young people move from one place to other for their higher education or to live with their friends. Frequent shifting of place comes to an end when the families and careers are established in 30s.
Patrick faces the situation of age of instability. Initially he lived with his group of friends during high school. Later he went back to his home and stayed with his parents. Now he is having his own apartment and got settled there.
