For example, if you where playing a game where a 10 side die was rolled and every time a 4 or higher came up you doubled your bet. You would have a 10% advantage. The safest way to make your bankroll grow is to bet exactly 10% on every roll.

Now if you record you wins and have come up with a win rate you can roughly estimate the advantage you have at poker. The exact number or percentage is not the point of the article, the point is this:

If you are getting beat at a limit and your bankroll is shrinking, the correct thing to do is decrease the limits you are playing for.

I have done this once, My bankroll shrunk down to $30 so I went back to nickel and dime NL for a couple weeks until it was back up to $120. As my bankroll increased, my buy-in increased. I made my money back safely and regained my confidence.

So many times I see people pull out their last $17 in a $50 game and "Go for it!".

It pains me to see it, I've never seen anyone comeback like that either.

If you're losing, take a step back. Analyze your game plan and look for a good  poker sign up bonus that can help you financially along the way. Continue to win slowly but surely and don't gamble with 100% of your bankroll!