Playing without a concurrent critical review of one's skills will simply get you nowhere.
Unless a player has an 'understanding chess' rating of at least 2400, the amount of significant knowledge that he can impart on others is limited.
The key to ultimate succcess is the determination to progress day by day.
The number of 'unneccessary' errors that have been committed on move 41 are legion.
In Chess, at least, the brave inherit the earth
Once you are in the endgame, the moment of truth has arrived... The amount of points that can be gained (and saved) by correct endgame play is enormous, yet often underestimated.