No gambling strategy can give you 100% winning ratio. This in most cases will just help to secure more winning.
I don't know why it's so hard for some people to understand that when it comes to games of luck then there is no strategy that can guarantee you win.
If such strategy exists then we wouldn't see this big number of casinos that are still operating.
The funniest thing about this strategy is that what works for me may not work for you. Having one own strategy and working with it is the best when it comes to gambling.
If it may work for someone but doesn't work for someone else proves that this strategy doesn't work. It relies on luck.