A successful trader isn't a trader who makes consistent profit without any loss but rather a trader who knows why his trade went the opposite direction and also a trader who understand risk management.
This is one of the important in trading which most the newbies are not aware of it.
Even before when I started trading, I admit that I made a lot of mistakes, especially the risk management and lack of knowledge because my mistake again for lazy of reading/asking/researching about how trading really works.