Invest extensive research and time into mastering the psychology of trading. Read books, articles, listen to podcast. You will also want to practice risk management because many people fall a victim to making the same mistakes daily. You need to be patient. Take time to learn, then be patience...
I've always studied The Greats when I started trading, I skipped the millionaires and started studying the Billionaires. Last May (2016) I wrote an article called "Top 5 Successful Forex Billionaires" and it was precisely aimed at answering your question. I did some pretty extensive research...