How to get past 1800 treshold?

Hi everyone.

So I am pretty sure that this topic has been already discussed many times before, but I would like to have some personal guidence.

So, I think that I have reached my peak, how so? Well I have come to the point where I cannot play "casually" anymore. When I play with other 1800 players, I must have silent room, I must have slept well night before and I need to have peak consentration to win most of my games.

I really want to get better, but I think that I have bigger problems in my games than random blunders. I think that my opponents are starting to out calculate me and I happen to make same mistakes that I know are there but I cannot point out.

I would like to study chess books, but the problem is that first, I don't really know any good books and they aren't propably available in my area. Second, I am very dyslexic with the chess notations and I find hard to follow them; in fact, I find hard even to point out squares, especially when I play with black pieces. I simply find chess books hard to read. I have always been somewhat "intuitive" player if that is the right term. I calculate of course, but I mostly just evaluate the position by examening that "how it looks" and make moves that I just see to better my position.

So, any light hearted advice? Has someone been in the same situation and how did you get over it?

Let us look at an example

You play too fast.
You end this is a 10+0 rapid game with 6 useless minutes on your clock, i.e. you played as if it were 4+0 blitz.
Take time to think.
"When you see a good move... wait... do not play it... you might find a better one" - Lasker
Your f4 is a huge blunder: you lose a pawn. You had an excellent position, better pawn structure. You had a dark square bishop, so you should put your pawns on light squares so they do not hinder your bishop, hence f3, not f4.
Always check your intended move is no blunder before you play it.
A great help is to enable move confirmation in your profile: think about your move, play it, check it is no blunder, confirm.
Whenever you lose a game, analyse it thoroughly.

Tactics. Most importantly go on chesstempo every day and do mixed and standard tactics.