I guess the best way to play smart in gambling is set a limit on how much loss you can take and a goal on how much profit you can earn. Its the same thing with trading, your number 1 enemy in gambling is your emotion. Some gamblers don't know when enough is enough. Bringing someone with you when you play is a good idea to remind you if you reached your limit.
If we set limit, we dont have to worry about losing alot of money especially money that we shouldnt be using. Alot of people think that there is no use to set limit but for me it is very useful. By setting some limit, it means we are playing smartly already. We dont play to win but we play for fun and if we win then that is a good bonus for us
Setting a limit is like an automatic stop when we reach the threshold of coins that we can afford to lose or an amount that we target to gain. Having this setup alone is not enough though because you need to also add your will and discipline to really stop playing when you reach your target numbers - this way, you are playing smart, for fun, and straightforward. So it seems that there is really nothing to lose after all.
You have to control your emotion so you can be successful in following your limit, without a limit will only make you indiscipline because your game plan cannot be followed anymore and you are gambling without direction when your emotion is too high. We want to win but if we do not have a good method that is not going to be possible, maybe we can have fun by winning sometimes but we are looking for long term success.