There is no holy grail strategy that you can use to win in gambling but playing smart will do. Knowing when to stop and be contented with the outcome of the game or bet would be the way to avoid being bankrupt and be addicted to it. You can only do this though when you view gambling a form of entertainment and not a source of income because when you do so then you will tend to be greedy and end up losing more money because you want to get back what you lose and may be full of emotions and will not be able to decide rationally.