I don’t think there is a specific amount to be used for gambling, or a certain percentage of your income for gambling but it always advised that you gamble with what you can afford to lose. If you can afford to lose 5% of your income then that the amount that is advisable for you to gamble with. We have all seen people who don’t discipline about gambling and we end up seeing them losing so much in gambling and we this you can easily turn to an addict.
Our income level differs making it that what percentage X would like to use as his daily limit for gambling could be reckoned to be too much for YZ due to his income size. I think everyone should just adhere to what they can afford to lose and get their neck stuck to it even when they feel tempted to go above it. I prefer using between 3-5 % of my weekly income to gamble but there are days that at my first session and I hit a win I just stop for the day, make use of my win without having to play further in hopes for more lucky which can be deceiving.