Emotional discomfort like anger, pain, doubt, despair, guilt, hatred and many more are the effects if you do not fully accept and understand the risk and the nature of the gambling. If you do not wager a big amount of money, then you will not experience any kind of negative emotions. Being a neutral state is the key for us to become a successful gambler, it is not easy and that is the reason why only few people who are keep making big bucks in gambling.
Losses in gambling is really normal, what's not normal is you keep getting emotional discomfort or what I called negative emotion because of gambling. It is really dangerous if you keep negative thoughts and negative emotions dwells on you because there is a high possibility that you can make a very bad decision. That is the reason why we should always observe our self for us to be aware to our current emotion and state.
Very well, particularly, anger can lead us to make very rash decisions at times, and we don't basically realize it until we reach the final destination where we have nothing left except regret inside of us. Those who are emotionally strong tend to be better gamblers because they can control their anger and don't chase their losses in anger to turn them into wins.
If we do that, we will only make things worse for ourselves and we won't even realize it. So it is always best to learn to control your emotions, especially the negative ones, to save yourself from suffering extreme losses from gambling.