This is why I always encourage investors not to quit their job because they made a little money from bitcoin trading/investment. You need the income for times like this when the market is in a bearish state so you can afford to buy at good positions. And still be able to take care of your bills without having to sell your bitcoins at a loss.
+1
And if the person feels like they can no longer work under anyone because they have made a large amount of money as a profit from bitcoin, so they don't need anyone to boss them around, it's better they start up something that can generate income for them as they still participate in their Bitcoin holding, and if they are trading, they should also focus on the trading. With a frequent flow of cash, they won't be affected by any unfavourable market situation.