Whosoever is determined to seek guidance and follow a path of right conduct must search for a shaykh from amongst those who have realization, one who follows a path methodically, who has abandoned his passions, and who has firmly established his feet in the service of his Lord.
Invoking the letters of God's Name without presence of mind is invocation of the tongue; invoking with presence of mind is invocation of the heart; and invoking with an absence of self-awareness because of absorption in the Invoked is the invocation of the Self - this is the hidden invocation!
Your Saying "God is Most Great" does not mean that He is greater than something else, since there is nothing else alongside of Him, so that it could be said that He is greater than it. Rather, the meaning of Allahu Akbar is that He is much too great to be perceived by the senses or for the depths of His Majesty to be reached by reason and logic, and indeed, that He is much too great to be known by an other-than-Him for truly, no one knows God but God.
If a tablet is not wiped clean of it's figures, nothing can be written upon it. A single heart cannot serve as the place for two things, let alone for several things. If the heart is filled with the forms of sensory perceptions, it is rare that it would perceive the meaning of Allah, even if one were to say Allah a thousand times. When the heart is empty of all that is other-than-God, if one uttered Allah only once, one would find such bliss that the tongue could not describe.
The signs of the soundness of the servant's love for his Lord are three: absence of self-willing; pleasure in every event which takes place through divine decree; and seeing the perfection of the Beloved in everything and being content with Him in everything through submission to Him in all things.
Encompass with your mercy and compassion all animals and creatures. Do not say, "this is inanimate and has no awareness." Indeed, it does; it is you yourself who have no awareness! So let existence be as it is, and be merciful towards it with the mercifulness of the Creator in the midst of His creation.