We know only that we are living in these bodies and have a vague idea, because we have heard it, and because our faith tells us so, that we possess souls. As to what good qualities there may be in our souls, or who dwells within them, or how precious they are, those are things which we seldom consider and so we trouble little about carefully preserving the soul's beauty.
As to the aridity you are suffering from, it seems to me our Lord is treating you like someone He considers strong: He wants to test you and see if you love Him as much at times of aridity as when He sends you consolations. I think this is a very great favor for God to show you.
Granting that we are always in the presence of God, yet it seems to me that those who pray are in His presence in a very different sense; for they, as it were, see that He is looking upon them, while others may go for days on end without even once recollecting that God sees them.