There is no strategy that works in gambling to achieve the profit but there are some to limit the loss.One which i have noticed that never keep your bitcoins in gambling sites or casinos,if they are there you will gamble if dont even want to,only deposit there when you are ready for it and feel that you can be bit lucky.
There is really no wreck proof strategies when it comes to gambling - but, it is ideal to have a strategy or should I see strategies than don't have any strategies at all and just bet in random. Hence, I would suggest, if you really want to do good with gambling, you better first decide for yourself that you are willing to spend most of your time during the day and night learning strategies just like what pro gamblers does.