Musar zu Jeschijahu 37:35

Likewise Chizkiyahu said: "to peace it is bitterness for me" (Isaiah 38:17) since the Holy One, blessed be He, answered him: "I will defend this city to save it, for My sake and for the sake of My servant David" (Isaiah 37:35). This is as the statement of our sages: "whoever makes his request depend on his own merit, is shown that it was dependent on the merit of others" (Berachot 10b).

What will he answer? What will he reply to this rebuke? Behold, certainly if for one moment, a person were to visualize in his mind this truth with a true and strong picture, all of his arrogance would blast off in flight, never to return.