Capital big enough in any way is a good tactic that I have to say, but there is no such thing as perfect trading conditions. the market is looking at you will never know where it will move. everyone, being a pro or a newvie, takes risks in opening positions. Regardless of the best calculations, the pros also lose money because the market is affected by so many factors that are beyond the trader's limit. Misery and greed are part of forex trading. How you manage these two things depends on the trader.