why would Saheb have hard time believing what his name meant?

The answer is same as that of the question .... what is the irony in Saheb's name...... the main point is that his name means the lord of the world ..... this is where the irony lies because his condition is almost worst as he spends his life as a ragpicker and then later as a worker for tea seller . Also, he loses his independence which he had, when he was a ragpicker and he is no more the master of his own ..... and that's why he will have a hard time in believing his name's meaning