successful 10%

Only one comes readily to mind and that's to do with the leverage already mentioned. In fact, the 100:1, and even 200:1, leverage that's offered is the extreme that traders are allowed to work with - it's useful to have it there but a much more realistic limit to work to is 20:1 or 30:1. Excellent profits can still be made but without the downside risks if sudden reversals occur.