There is not strategy which could actually work but luck.
If you have it with you, nothing can beat you but if not, try your level best but you will never win.
Luck and analysis is going to give you a good fortune if you will combine them plus the skills that you have as you gamble. And also I forgot that you can apply some of your experiences as you gamble because that can be helpful upon taking up risk. There are just some people who are that lucky and always basing their gambling career in luck.
i have seen people spending their career in gambling when they are good at poker or black jack and some sports betters who could get some inside information other than that you cant survive with gambling alone.
Yes that's for real I have real friends that are making their living with gambling. And they don't have some strategies or safe methods as they gamble and it came to them that there is no really safe method in gambling. If you want to gamble, then just simply ask for luck to come to you and simply take the risk.