Very nice article to read. I also need to mention patience is must in the forex trading . To become a good professional in forex trading you need to develop this quality.You can develop this by experience.If you are a beginner, do more and more in demo account and after the start of real account you will continue this quality by experience. If trader have very big luck the he will stand some time in market with this kind of lot size, so lot size calculation is very much essential for a trader to take a trade for a pair, someone also test his luck like that with big lot size with 5 to 10 pips only not for big pips.