It's start with practice but research is key. The more research you do, be it reading on to the whitepaper or even technical analysis, the larger you chance to make more is. I think in time people who spent time will be succesfull in this endeavour, although luck is important too.
You can create your luck 
! I do not negate the luck in the market, but to be honest, if you are a master in trading, the luck will always follow you because you can control your luck through your trading method.