What do you mean by he stopped his job in real life to focus on BTC, is he a BTC day trader? Because if he is just an investor, he can buy and hold faster than the snap of the finger. And if he left his job in real life to becomes a full time trader, then he is making a mistake. Trading is risky, but that's not even what i am talking about, he can trade if he wants to and if he has the skills to, but not full time, so that he can be able to keep his real life job, this is basic logic.