Gambling when you are having mixed emotions can cloud your judgment and also affect the decisions you make, at that point you wouldn't mind if you are losing and you can keep going till you have nothing left all under the excuse of chasing your losses.
I believe you are just saying this because you are not a gambler, because if you were, you would know that even if you are in your right state of mind, you can still make some rational decisions that would make you lose your bet and also chase your losses. Sometimes gambling when you are depressed can help you make decisions that would help you win your bet because at that point you will not be afraid to pick your favorite clubs to win, which can possibly work out for you. For you not to chase your losses, you need to have a gambling plan and stick to it whenever you want to gamble so that it will help you to know your limit and stop gambling when you have reached your limit.