Sufis therefore have different concentrations by which they are helped not only in keeping their gaze steady, but standing firm upon one thought. When a person cannot take interest in any object or being, then his mind is not steady, for there is nothing that it takes interest in; it is the interest which makes the mind steady. A certain thought which is inspiring or helpful in some way, or a certain form which is inspiring, when once one has concentrated upon it then the mind becomes steady also, then it can easily hold an object before it without wavering.