The study of typical plans is something that the leading grandmasters devote a great deal of time to. I would say that the most far-seeing of them devote as much time to this as to the study of openings.
Alexander KotovYou will already have noticed how often Capablanca repeated moves, often returning to positions which he had had before. This is not lack of deciciveness or slowness, but the employment of a basic endgame principle which is 'Do not hurry'.
Alexander KotovMy achievements in the field of chess are the result of immense hard work in studying theory.
Alexander Kotov