Neville encourages a simple practice which we should get ourselves doing ALWAYS and independent of having to manifest something.
‘Imagination is defined as spiritual sensation. Come, let us now sense spiritual things that are not physically present. Right now I want you to feel a tennis ball, then a baseball, a volleyball, and a golf ball. They all feel different, do they not? If you can discriminate between these different balls, are they not real? If you can touch a tennis ball and spiritually distinguish it from a baseball, it must exist, even though it is unseen by mortal eye. So you see: you can behold a thing that is not seen by the mortal eye as though it were, and if you do your faith in Jesus Christ will cause the unseen to become seen.’ (Neville, Faith in God)
In fact, make it a daily habit to practice it. Take a daily challenge to practice this for three days, seven days, etc. Perhaps you could relate with a different list. Find a list of three to four things you want to sense with any of your five senses. In this week, we will take this practice from step to step. Make today a start with any favourite way you easily sense the world around you.
Do you hear sound very distinctly? Now, list three to four voices and you imagine you hear them distinctly. Add simple variations: hear one in-person, one on the radio, one on the phone. They should all sound very uniquely, very differently in your imagination. Do you see things very sharply, e.g. colour, shapes, etc.? Then imagine seeing three to four different objects before you. Maybe your sequence would be an object on paper, then the same object in its place. E.g. does it feel differently to see the drawing of an elephant from how it feels to see an elephant as a toy, then an elephant in the zoo, then an elephant in the wild. Wouldn’t you smell them differently? The paper would smell different from a toy, different from the zoo and the wild. How about taste of anything you wish to sense.