If you are going to make your mark among masters, you have to work far harder and more intensively, or, to put it more exactly, the work is far more complex than that needed to gain the title of Master.
Mikhail BotvinnikIf you are weak in the endgame, you must spend more time analysing studies; in your training games you must aim at transposing to endgames, which will help you to acquire the requisite experience.
Mikhail BotvinnikChess, like any creative activity, can exist only through the combined efforts of those who have creative talent, and those who have the ability to organize their creative work
Mikhail Botvinnik