Sure, you can make 10% or even more in a day, but this is not about luck, it is about your knowledge in trading and anyone who feels is as easy as it sounds can be my guest and hit the exchanges to find out by themselves. 1% for me anyway is actually low, considering when you play your cards well, you can easily get far more than that. Some also said, it is possible in an uptrend only, but you can decide to short the market too in case anyone has forgotten that.