Actually, he started with Litecoin, but lost everything. He began investing in bitcoin in 2015 and won a return of 330% in 20 months.
Read more about the story.
http://news.8btc.com/4-things-i-learned-as-a-bitcoin-holder
It is a matter of luck, patience and strategy. For some people when bitcoin was still low they do not mind to buy but when they see that there is a sudden increase in value they panic and start buyin but actually that was just a bubble and then bitcoin started to decrease in value and they panic again and they sell their bitcoin at a very lower price. But if they are just patient they will just wait for the price to go up again before they will sell their bitcoins.