Acceptance is the major factor to move forward, even how deep you dwell with the losses that you commit there's nothing that it can help, otherwise you'll keep pushing and trying only luck may permits but if you push for it you may lose more, forgetting losses is something that needs to be taken seriously, unless you set a accpetable amount to lose and not to exceed then it's not that hard to quickly forget and move on about it.
People are having trouble because they are never ready to move on, especially after losing, and they will do anything in their power to get their money back. This is a common trap in gambling, and the thing is that people need to play smart when it comes to gambling. We know that pushing might bring luck, but when you do that, you should be aware of how dangerous gambling can be, and there are simulators that make it more interesting so that even if you lose, you will always try again. Control is crucial.