This things happen to me recently when all my hard earning from siggy campaign got loss in one day playing dice with yobit, I earn almost .04 btc don't know but it's all my earnings from yobit and for just one day everything was lost because of the martigale system got 13 straight losing steak left me nothing with my btc account. don't played again lesson learned.
can get profits on gambling when you have a definite and solid strategy and you stick on it like a glue. It's been doing fine for me in the past month and I'm happy on what I'm gaining even though it's just a small amount coming in to my wallet everyday.