I heard about bitcoin since 2010 but at that time I ignored it and thought that digital currency was just a joke, my friend at that time had bought about 100 bitcoins and that's true when 2017 I heard that he was already a billionaire. maybe that's my biggest regret
Till date 100 Bitcoin does not make one Billionaire. Even at latest ATH, 100 BTC equals ~2.8 million USD. So, you still have chance to outperform your friend. 