What's my ###king problem? (bankroll mangement + super bad luck)

[longlags]

That the 4th time it happens to me.

I deposit 50$ in Full tilt poker.
In a week, I am standing on ~600$. another week ~1000$.
I am starting at .10/.25, then .25/.50 and some .5/1

then, without anything out of usaul, i am getting into downsides which crashs me back to the floor, penniless.
my luck seems to runnin out, and my play adjust to it, crashin me hard.

before i am going to do that again, any advices?