Fir gambling you don't overdo yourself all because you aim at making profits or getting a win and to be frank there's no much risks to be taken in gambling knowing fully well your chances of winning are quite unpredictable. Sometimes the risks we take tend to be worth it but in most cases we need to risks on low odds cause yes gambling comes with so much aches and when you risks higher amount and end up loosing it'll be a story for another day. So to be on the safer sides risks what you can afford to lose.
Gambling is supposed to be fun and makes some money, that is if it comes but if doesn't comes, it shouldn't be a something that is going to a set a back for you that's why it's advisable to gamble what you can afford to lose, that's the next way you can gamble and not feel anything but when it becomes personal that you are gambling to make a living, it will be a frustration from your end, everything you do is going to be with pressure and fear of not losing.
If I'm going to take a risk, it's going to be risk that wouldn't hurt me financially and emotionally, gambling has way it disturb your mind whenever you lose a bet, it will twist your mind that you don't know what you are doing and then financial is losing your money but it's financial loss that brings emotions too, so gambling with little amount of money can help you deal with the emotional money, you lose and forget what you can afford completely.