Self-control really is a valuable asset that everyone should have when they are gambling. It's least talked upon but it will save a lot of fortune to a lot of people looking to win.
It's been talked in this topic.
Which is hard to learn, self control or winning long term?Well, I must agree with you, that self control is necessary so we will not be tempted to do the cash out.
I mean, if we are gambling and we are aiming to win, we need to trust our own strategy, and constantly relying on cash out could only mean we are not confident with our own pick.