In his late childhood (or early youth) I have played quite a lot (and almost professionally) collectible card games (CCI). This is not a "fool" and not poker — KKI is much closer to chess or computer strategy-RPG than directly to cards. But now it's not about the cards themselves and not about the games, but about what they taught me.
In the game of KKI there is a six-sided dice, which plays a significant role in the game mechanics. However, the more experienced the player becomes, the weaker the role dice plays in his party. The more experienced and stronger we become in life, the more hidden relationships we see in life, the less important randomness is for us.
And you should never count on dice — the power of independence from randomness lies in the ability to exclude its influence from your party. You dream not to depend on chance — live as if you always control and determine everything yourself, and then that's exactly what will happen.
In any game (as in any life situation), there comes a zugzwang — a situation where each subsequent move only worsens the situation. This is a hopelessness in which the hands give up, this is a situation when everything seems useless. The ability to step over weakness and the desire to surrender is a property of a strong fighter.
Everyone gives up — and you continue to fight the situation.
I remember by myself, the hardest opponent for me was a certain Alexander — he always fought to the last fighter, and in one case out of ten he managed to turn the situation around and win. Get into the habit of keeping your fists clenched.
The price of a mistake is victory. But how to see and understand your mistake? Players use the so-called "dice of errors" for this. They mentally put a six-sided cube on the table next to them, and every time they make a mistake, the cube turns over, increasing the number on its face by one. When the cube turns over to "six", the player mentally counts himself a defeat. And many even write down their mistakes in a separate notebook and analyze them later — this is the most powerful practice and training.
The "Error Cube" can be used in negotiations and meetings, in personal life, and generally anywhere.
In KKI, there are systems of separate indicators — for the convenience of understanding the game mechanics, the control of the game situation is divided into several separate "controls" - time control, control of their actions, control of the enemy's actions, control of the health of their fighters, control of their abilities, and so on. It works very well in life.
Divide your attitude to the situation into several independent "streams" and evaluate them consistently — so you will not miss anything and learn to take into account a huge number of significant factors.
I haven't played KKI for a long time, but the rules and laws that these games taught me still help me in life. I hope they will help you too.