I get this question a lot.
While there are not many concrete answers to this, it helps to remember that Warren Buffet acquired a huge part of his wealth after the age of 60. Being rich is often about patience and peace when others are losing because of quick bets.
However, there is another possible option: To have an inheritance :)
The former makes you richer, the latter makes you believe you are rich.
Anything that comes quick has the potential to go away quicker. Good things always take time, always.