When gambling stresses you out it's a sign that you are doing it wrong and perhaps it would be better to take a break for a while in order for you to get your mind right. Gambling is a game of entertainment and shouldn't be used as a plan to acquire wealth, one of the reason why people get frustrated with gambling is because they put their hopes into it probably because they think their games are well analyzed or they got a paid prediction, this makes them go all in by staking huge amounts of money hoping to get a significant reward but most times they get disappointed. Gamble responsibly and just do it too have fun.
Taking a break is a really useful tool. Sometimes it’s enough to just stop and give yourself time to breathe and look at the situation realistically. Often, emotional decisions based on frustration or a desire to get even can lead to even more stress and loss.