The Autorité des Marchés Financiers, the French regulator, did a study of authorised FX brokers which found nearly 89% of clients lost money between 2009 and 2012.
Of 15,000 accounts surveyed, 13,224 lost money to the tune of E175m whilst he 1575 that made money made E13.8m.
Probably many reasons but at the end of the day, it doesn’t matter which end of town you operate at, human psychology is evenly spread across the playing field.
Conquer those demons and you will become profitable and be in that top 10%.