A little cognition after enter society

I am 24, graduated from an ordinary university last year. I was an active guy and would never think about my future. I imagined to startup my company, being a successful entrepreneur at once, like Musk.
After I graduated, I looked for a job for a long time and worked in a small company, which had about 40 persons. I found that the society was totally different from my imagination. I couldn’t perform well at the job, the colleagues had more ideas, knowledge and skills than me. When they discussed some deep topics about society, art and book. I could hardly discuss.
I prefer to chat with some friends who came from Top universities. I obviously feel that they are the person that I want to be. After that, I cancelled many activities, spent much time studying and trying best to catch them.
Sometimes I feel alone and confused, but I can overcome the negative emotion and let study become a habit.