Tommy Angelo describes in his Elements of Poker a concept he called "Reciprocality". It is quite abstract, but it refers to the flow of something (anything) between two extremes that hold a difference in polarity. In this fashion, there would be reciprocality between a positively charged wire and a negatively charged one, and the expression of reciprocality would be an electrical current.
In poker reciprocality assumes many forms. He talks about Skill Reciprocality, which is related to the difference of skill between two players and says that from this difference there is a theoretical flow of money between them. The more skilled player is the one who makes the optimal decisions more often, and thus reciprocality points that there is a theoretical flow of money to his lap. It doesn't mean that he will win every pot he plays against the less skilled player, but that in the long term (after sustained and repeated trials) this theoretical expectation is going to be materialized in actual form.
Skill Reciprocality is what we try to increase as we read books, articles, watch videos, discuss hands and so forth. It is the theme of at least 80% of the material we have here in ps.com. It is the "primary", most obvious and currently most highlighted way of trying to mount an skill edge over our opponents. It is so important in actuality but at the same time so highlighted that people often think that this is the only kind of work to be done in their game in order to achieve the success they intend to have. If someone says and is honest about the fact that he has worked extremely hard already to acquire this skill reciprocality and has not yet obtained the success he intended to have in such a long period of time, then there is something wrong. He is either thinking about short-term results and getting disappointed with them (which is not the actuality of someone who's been playing for 1 year but not showing further results) or he is lacking other forms of reciprocality that, once absent, will undermine his skill reciprocality.
(now this last part in bold is the key to the whole stuff if the guy has (1) studied a lot but has not shown decent results yet and (2) has done this over a long period of time)
The problem is that there is also Tilt Reciprocality and Quitting Reciprocality. If someone has already acquired "enough" Skill to beat his limit and has applied this skill over a long period of time already but has not shown great results yet, I think that the cause may be in the absence of these two latter forms of Reciprocality I mentioned.
I can talk more about this if you guys want. This post is quite long already! ♠_biggrin: