Of course forex has the capacity to make you very rich. A lot of traders having seen for themselves the lucrativeness of the forex have abandoned their well paying jobs to focus on this financial market. If you learn your demo well perfecting your trading strategy with commendable money and risk management; you could go make a good income from trading the forex market.
Many people here say the right thing about successful strategies,correct money management and more. And all of them are right. But there is a very large BUT. No matter what excellent strategy you come up with, it will not insure against market changes. And money management is not always successful, if you are novice and do not have enough experience in this. And even if you are a professional this does not always protect you. From the large losses in this market you can't escape. Therefore, it is very difficult to get rich here. I would rather advise you to do something in real life and not spend your whole life in the Forex.