Ask HN: What’s needed to make living by investing

What all needs to be true if I wanted to make a living by investing/trading stock? In other words what are all the things that need to happen for me to quit my job and make money by working for myself from anywhere and generate the same amount of money as my current salary(say $180k gross)

I am trying to understand the needs from different areas/domains perspective. Eg: you next at least X in capital. You next a llc or inc company. You need knowledge of statistics etc.