Suddenly a little trance, feeling like I'm still in school

Suddenly a little trance, feeling still in school. I live a ten-minute walk from the company and carry a bag to work every day. I usually commute to and from get off work at the right time and eat at the company. On weekends, sometimes I feel that the rented house is noisy, and I will go to the company to read books. I have been working for almost two years, and my interpersonal relationship is also very simple. I only know one colleague who works with me. It's not all that different from when I was in school. I feel that I am still a "student", and my way of thinking and life style are lack of socialization.