What is game? Game is a metaphor we used in the Seduction Community to desensitize or objectify what we experience out in the field so we won't take it personally.
And I got to tell you, it can hurt.
There will be nights when you will feel more pain having gone out than if we you had stayed home and wish that you haven't gone out.
What is this feeling? It can be depression, dissatisfaction, disappointment, embarrassment, failure, etc.
But this is a process, and if you ever want to get good at this game you have to experience those pains for those will be the lessons for you to take so you then can refine your social intuition and calibration.
In fact, don't even focus on these negative emotions for they will drain you and cause you to have a less objective reflection on your social performance.
Reframe your experience in "what have I learned?" So you are out in a club and you opened a set, you got the girl talking, you two are dancing having fun and laughing, and you say to yourself "Already, I have this chick now!" and spend the entire evening in the club only with her, then all of a sudden she pulls away and acts like she doesn't know you.
What happened? Instead of focusing on the negative emotions of failure or dissatisfaction, what have you learned? Maybe you were too clinging and needy latching on to her the whole night and so will need to break away, or you were talking too much, or not contributing enough to the interaction.
Whatever it is, put your ego aside and reflect upon it to understand the bigger picture, which is to improve your skills in the long haul instead of beating yourself up over one little loss; that is how the game can be mastered.