Sayyidi wa sanadi Mufti Mohammad Taqi Usmani (Allah preserve & protect him) instructed,
‘The highest level (achieveable for a human being) is to be (a true) slave of Allah. (That is, ‘abdiyet.)
May Allah bestow this to us. (Ameen).
In order to facilitate this I suggest doing this excercise.
‘O Allah! I am Your slave (abd) and You are my Master (Rabb)‘.
Do this repeatedly. Make it a routine habit. Continue doing this excessively until it becomes a spontaneous speech of your heart (and mind).’
Waaz, 7/8/2016, Masjid, Darul Uloom Karachi, after asr