There's a huge difference in between being a gambler and being a good gambler lol. The main thing is that great gamblers uses the house's money to take risks. If you're risking your own money on high risks plays...you're doing something wrong.
The only great gamblers play games that aren't pure gambling like Poker.
They are good atstatistics, reading the other peoples and so on.
You cannot be a great gambler at Satoshi Dice, you can be lucky only.