Exactly , Self control and Mind over Desire because that will lead you to either betterment or to be addicted.
Setting up your gambling limits can help you to avoid some high risks because sometimes we get too much engaged in betting that we don't realise how much we can afford to losse and afterwards our mental health can be disturbed or making you too addict so it's better to play with your mind and how much do you have at back to support you.