Don't overstress yourself because you have lose a big amount of money. You can't rewind everything, so the best choice is to calm. If you stressed yourself with your great loss, it can lead to depression. And all of us really know what will happen if you can't control it. It's a mental health problem that you should manage.
I'd rather overstress myself. Why? That's the time I can test how far I can bear my losses. This can't be avoided so I will face the wrath of being a loser.
If I can't overcome my stress, then I'm not supposed to be a gambler after all. But if I succeeded, that's what I can be called I manage properly my emotion.
I know that I am not the only gambler who experience this. After a loss, I am always want to regain it causing for another loss because my mind and emotion become aggressive. If you lose that day, shut it down temporarily because all of us have bad luck days. And I do believe that luck is essential in gambling not only your strategy.
Like for number 1, I will pressure myself to chase for losses until my wallet is empty. I will now feel the negative effect of forcing to chase my losses.
That was a good experience that will lead me on not doing it again the next time since I already know the feeling.
The bottom line for me, for a gambler, it's better that we all feel the negative effects of doing gambling rather than to make it perfect. Without these bad experience, we will never learn.