That no.2
I'm dumb to say that I used to bet higher when I'm getting good call with my bets. Trusting too much with my experience and thinks that it's okay to bet more with the amount I won.
Getting confident once we win and we are thinking that this can happen all of the sudden.
That is gambling, its hard to stay focused when we lose, maybe even harder when win!
All this factors affect our gameplay, its hard to stay focused and play every hand with cool head. Losing too much or winning a lot, makes our mind vulnerable and we make mistakes.
Those are the problems, but what are the solutions? There is only one solution, taking a break and chilling some time before going into fire again. Its hard to do that when your mind is burning, but that is experience and who ever gamble should practice this, doesn't matter how hard it is, with time and practicing its easier.
About factor 1, aversion to lose, who have that should stop gambling! In gambling losing is a big part of the game, if you can't take it and handle it then you will face with big problems and gambling will make you more nervous!
That's the real situation that it's harder to focused when you have tasted the spoon of victory. The solution you gave is effective if the gambler will follow it but sometimes it's hard to think of taking a break and chill for awhile. Why? Because our minds are set being a gambler and a loser as well, we all want to take the winning again and gamble recklessly. The confidence and pride is still there but the results can't be handle because we don't know how it can go.