The single most important thing in life is to believe in yourself regardless of what everyone else says.
First, we are born in the same galaxy. Born of the same species. Our lifetimes overlap. The meetings between humans are so unlikely as to be miraculous. To laugh, to cry, and to fall in love. Everyone is made up of a collection of 1% chances. Thus, I am dazzled by the fact that there are so many miracles in this world.
One thing with Garry, and I think it is due in a large part to his Soviet training, he'll never quite understand that you have to be able to criticize constructively. When you have someone who is always on your case and it's never good enough no matter how you win a game, it just brings you down, you lose confidence. And as a chess player you have to be confident, you have to believe in yourself.