Does repeatedly hearing the verse: (And man supplicates for evil as he supplicates for good, and man is ever hasty) {11} Al-Isra, while persistently supplicating for a specific need, and experiencing humility and tears, indicate that one should stop supplicating for this need?

Personal experiences cannot be used as evidence to prohibit supplication (Du'a), for the criterion is the Sharia. Du'a is among the best acts of worship; it is "worship" itself. Whoever has the door of Du'a opened for them, has the doors of mercy opened for them. If the Du'a involves sin or breaking ties of kinship, then it must be abandoned; otherwise, it should not be. And know that Satan is an enemy who strives to confuse a Muslim in their religion.