To tell you friend that, there is no instant making money in Bitcoin investment, it was just a lucky and in perfect time that the situation goes like that. And you should also be aware about the volatility and that it changes everything in every minute. That if you come into the trading when the market is already high, you're certainly got not perfect and profitable but if you started buying during the bear season, that we could expect a big gain in the coming days.
But i see all the books of bitcoin pointers, it seems big business, if you're going to see luck, so you mean bitcoin converting from 9000$ to 100,000$
In the case it will be called luck. But if you track the price on any exchange you will see the price isn't stop, high - down - high - down