In my experiences, it depends how many pips you try to get. I was on demo, and I targeted only 10-20 pips per day (mostly one trade per day) and that target was achieved succesfully. 2 months later, I replicated that strategy and it has been around two months till now and still I get the same outcomes with what I got on demo. I realize that forex trading is very personal, and better trying by yourself. I've been two years in this business, and this is more about how to control your emotion than your technical knowledge.
I'm trading with Ctrader if this is matter
sorry for my bad english