Belief that you can beat the game and the casino, IMO is the single largest and most damaging mind-set/frame-of-mind a player can have. Because you have the wrong frame-of-mind you propel yourself into frustration and aggravation when you begin to lose (or even win and then continue your play eventually losing part or all of the win money) due to the fact you cannot face the responsibility of your own actions and being a loser. All you do is propel yourself in destruction because of your desperate attempt to redeem yourself and save face.
Simply, you cannot tell yourself honestly, mean-it and physically absorb with positive and forward thoughts while maintaining absolute clear vision—you beat yourself and you failed.
It is not just for baccarat or gambling, it is the same for racing, marriage, dieting, etc., etc., and so on—it is the human mind, you will make every excuse and blame everything else, except yourself. And if you did blame and manage to absorb the downfall yourself—your frame-of-mind will be so twisted and clouded with conflicting thoughts and frustration, your focus will be worse off than before you decided to decipher the reasoning and "why's and how's" of your loss, or a failure to hit a goal.
Why? Because if you did decipher it all and realize those "why's and how's" then you begin to wager against what is rationale and what will realistically be the norm or actually happen/occur. Then the cycle, effects and results happen all over once again at even a faster and greater degenerative rate. And you are there, sitting and gambling in the combative mode you placed yourself in to cure what you fell prey to and failed to realize. You are physically in a conscious state—however, you are gambling with numerous sub-conscious paths and avenues controlling you and removing most of your edge, advantages, focus and visions.
You have to alter your frame-of-mind and be 100% conscious of all the why's and how's, as well as the psychological repercussions of losses and wins and how they exactly affect yourself. You also have to remove the affect and hurt you inflict upon yourself with total removal from your bank roll and zero dependence on profits to sustain and support every one of your necessary expenses you have in your life, IMO. Then you give yourself a much better chance to prevail at a greater rate or a consistently positive rate.