Ok, it is not what you are thinking.
Bitcoin is not a Get rich quick scheme, but the UK series "How To Get Rich Quick - Season 1 episode 3 includes some footage of a rich entrepreneur, Dave Fishwick, creator of Bank of Dave, discussing Crypto currencies as one investment option to become rich.
Luckily for us, the Bitcoin price at the time, generated a small profit when that episode was shot and he even commented that the profit he made then, were the equivalent of 3 years of interest in a local Bank.
I made 800%+ profit on my initial investment over a period of 4 years. (200% per year) - Go watch the series, it is full of good tips for the budding entrepreneur out there.

Edit - I wonder how many people will only reply to the Thread title and not on the content of the actual topic now.
You're just really lucky that when you invested in bitcoin, it is still not doing an astonishing bullrun. Bitcoin is just speculated to be a highly valued asset so people got the FOMO. There's no accurate method to get rich quick in my opinion, it just happens that some big risk give you big rewards.