“Whenever the Prophet (ﷺ) went to bed every night, he used to cup his hands together and blow over it after reciting Surat Al-Ikhlas, Surat Al-Falaq and Surat An-Nas, and then rub his hands over whatever parts of his body he was able to rub, starting with his head, face and front of his body. He used to do that three times.”
Allah - there is no deity except Him, the Ever-Living, the Sustainer of [all] existence. Neither drowsiness overtakes Him nor sleep. To Him belongs whatever is in the heavens and whatever is on the earth. Who is it that can intercede with Him except by His permission? He knows what is [presently] before them and what will be after them, and they encompass not a thing of His knowledge except for what He wills. His Kursi extends over the heavens and the earth, and their preservation tires Him not. And He is the Most High, the Most Great. (Quran 2:255)
Many of us go through that phase in our Imaan where we feel down, feel Allah does not Love us or we have lost that connection with Him.
Either we keep screwing things up, or feel burdened by our sins or feel our deeds are not good enough to be accepted by Allah, Most Gracious.
But the fact of the matter is, we have to hold on and hope in the Mercy of Allah, no matter how bad we may be. As Allah says:
“O son of Adam, so long as you call upon Me and ask of Me, I shall forgive you for what you have done, and I shall not mind. O son of Adam, were your sins to reach the clouds of the sky and were you then to ask forgiveness of Me, I would forgive you. O son of Adam, were you to come to Me with sins nearly as great as the earth and were you then to face Me, ascribing no partner to Me, I would bring you forgiveness nearly as great as it.”
[At-Tirmidhi (also by Ahmad ibn Hanbal)]
Do not despair in the Mercy & Love of Allah and try to do the best you can. Keep fighting the good fight and do not let shaytaan entrap you into further despair.
This feeling down & losing that connection with Allah, is also a test from Allah to see how much we, as His servants pine for Him, miss His presence and strive to earn His love & pleasure.