BR management will get you through the worst bad luck streaks. I personally like to play with no more than 2% of my BR on the line at any one time. There aren't losing streaks bad enough to make you broke if you do this. I played for 2 years on PStars with one $20 deposit. I would get such bad losing streaks that I would have less than $1, but then the luck would turn around as it always does. Once my BR was $50, I never got that low again and eventually built it up to $240 before Black Friday.