Is it selfish not to think of others everywhere and sacrifice yourself?

It's not selfish. Selfishness means that when an individual faces the conflict between his own interests and the interests of the other party, he will ignore the loss of the other party and give priority to his own interests; The premise of selfishness is to harm others and benefit themselves. And your way of doing things is just to leave more space for yourself, and there is no subjective intention to hurt others.

You are a maverick, with your own enjoyment space and way of doing things. The only fly in the ointment is that you are too self-centered and easy to lose friends.

I suggest you make a proper change and communicate with your friends more, which will help you step into life in the future.