As long as having realized that we are the servants of Gods, there are no limits in what we ask from him. Prophet Muhammad (peace be upon him) always applied for high positions and requested them from God (swt), because God (swt) loves to those who request from Him and loves to give to the one who requests. (1) Therefore, Prophet Muhammad (pbuh) taught to his companions and community to request without limits; abundant. And again he announced that God will scourge on who does not request from Him. (2) Prophet Muhammad (pbuh), himself always requested for the better and the valuable. For example:

He requested the Makam-i Mahmud -praiseworthy position; then requested to perform shafaat -intercession (so to save his community) for his community in the judgment day. He requested Angel Gabriels companionship during his death. He also gave so many clues to us on what we can request from God. One of them is:

Ask God for everything, even if it is only a shoe lace (3)

Therefore, thoughts such as, What should we request or not from God should be put away and anything for this world and for the Hereafter must be asked from Him, but of course compliance with one condition; sincerity, which is a necessity for all supplications and prayers. God grants to those who request open heartedly and sincerely.

God, which there is nothing so hard for Him, as long as we obtain His consent, He will bestow anything what we want and what we need for. We should request anything from God, just from Him, no matter big or small, important or not. In fact, nothing at all is absent in His treasury, just so we know how to request.

(1) – Tirmidhi, 126:3566
(2) – Tirmidhi, 3:3370; İbnu Maje, 1:3827
(3) – Tirmidhi, 149:3607, 3608