Q. A feeling of deadness seems to come...?
A. Here is the question of concentration, and not of its effect. The question of effect is quite a different subject again. Then the question comes: of what object? Something to steady the mind. It may be a tree, a flower, the sun or a star. Of course, according to the object a reaction is produced. And according to the reaction an object is produced. According to the nature of the object reaction is produced.