It's important to have some money in fiat money on stand by so you can buy the dip when the prices fall down.
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.