Yes that is true, with the bitcoin of many people who have successfully achieved their dreams. But unfortunately I am a new user in bitcoin so I did not have big profits in the past year because in 2017 the price of bitcoin is so high that it is on the month I think. But with me keep struggle and keep learning about bitcoin, then I'm also sure will be able to reach my dream with bitcoin in the future.
Diversifying is the reason why Billionaires are always rich they have multiple investments which means multiple streams of income. So though we have had enormous success with bitcoins, we should also invest some of the money into other ventures like real estate and others.