God created each one of us with a purpose. We are not here to just enjoy but we were created to improve humanity and to help the society and people around us.
What we gain by being selfish? What are we going to bring back? When a human is living in this world without any purpose and responsibility means they are nothing.
It’s okay if at the end of day we didn’t become successful or achieve anything big, but if you are contributing or being useful to someone or anything in this world, then you are considered as a human with purpose.
What is your purpose in this world?