Dhikr (remembrance of Allah) is to the heart as water is to a fish; see what happens to a fish when it is taken out of water
We live in the age of Noah (a.s.) in the sense that a flood of distraction accosts us. It is a slow and subtle drowning. For those who notice it, they engage in the remembrance of God. The rites of worship and devotion to God's remembrance (dhikr) are planks of the ark. When Noah (a.s.) started to build his ark, his people mocked him and considered him a fool. But he kept building. He knew what was coming. And we know too.
Had our hearts been pure, we would never tire with the Dhikr of Allaah.
The lights of some people precede their dhikr, while the dhikr of some people precede their lights. There is the one who does (loud) dhikr so that his heart be illumined; and there is the one whose heart has been illumined and he does (silent) dhikr.
Tawbah is the cleaning of the heart, dhikr is the feeding of the heart.
Khashyah (fear) is to fear Allah until His fear comes between you and your sins - that is true khashyah. And Dhikr (remembrance) is to obey Allah so whoever obeys Him has indeed remembered Him, and whoever does not obey Him is not a dhakir - even if he makes abundant tasbih (glorification) and recites much of Qur'an.
Allah was when there was nothing else than Him, and His Throne was upon the water, and He wrote in the Reminder (al-dhikr) all things, and He created the heavens and the earth.
Sometimes I was too tired, other times just lazy. Now and then, I was frustrated because nothing seemed to be happening - no signs from God, no enlightenment, nothing. But that wasn't the point, the Shaykh explained. What mattered was the inner connection with God, which builds slowly and only transforms us gradually. Another obstacle, however, was that I often found it hard to concentrate during the dhikr.