I believe there are two concepts that will define your inner game too some extent. For some, a great del and for others not so much. The concepts I´m talking about are oneitis and ego.

Here is a loose definition of the two:
Oneitis: The fallacy to find a partner who is great, separate them from the rest.
Ego: The fallacy to always want to be great, separate yourelf from the rest.

They are both instinctual, primal and come from your core need to survive and reproduce.

Now, how does this apply to approaching? Ego applies in the way that we do not allow ourselves to make mistakes, and so we never approach. Oneitis manifests in our way of choosing one target for the night, the hottest girl, and not anyone of the other girls you might also be attracted to.

So when approaching, let yourself make mistakes and rate women by a simple yes or no system.

Of course these concepts apply later on in the interaction as well, but we´ll save that for another time.

Take care!

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Common sense, moral and humility will get you anywhere.