Is questioning one's worthiness for a person with higher material specifications, despite certainty in God's omnipotence, considered a satanic ploy to diminish trust in the efficacy of prayer?

One must believe that Allah Almighty answers the supplication of His servant if the conditions for its acceptance are met and its impediments are removed. This answer comes either by hastening it in this world, or by reserving good deeds for the supplicant in the Hereafter, or by averting evil from them. This is supported by the Almighty's saying: "Call upon Me; I will respond to you," and by the Prophet's (peace be upon him) narration: "There is no Muslim who supplicates with a supplication in which there is no sin or cutting off of kinship ties, but Allah will give him one of three things: either He will hasten his supplication for him, or He will store it for him in the Hereafter, or He will avert from him an equivalent amount of evil." The conditions for acceptance are summarized as responding to Allah's commands and prohibitions, believing in Him, and trusting in His promise. Thus, a Muslim should respond to Allah, believe in Him, trust in His promise, and supplicate for whatever good they desire in this world and the Hereafter, while seeking out times of acceptance and not being impatient.