When a gambler have lost so much already. This makes them hard to quit and that's why being a responsible one is quite hard when you've got a lot to worry with.
And so, even some gamblers would like to be responsible, they just can't because they can't help themselves and doing it at first glance won't have an instant result.
They can do it somehow by changing a little by little until they've fully been changed. Start with small deposits and maintain that for as long as they can and to control the amount of losses that they might have just let it lose.