The closer one approaches to God, the simpler one becomes. - Teresa of Ávila

there are people whose nature it is to be very much cast down by small things.

… Spiritual betrothal is different… Even though by union is meant the joining of two things into one, each of the two, as is a matter of common observation, can be separated and remain a thing by itself… We might say that union is like the joining of two wax candles so that the flame coming from them is but one… Yet afterwards one candle can be easily separated from the other and there are two candles again.
In the spiritual marriage the union is like what we have when rain falls from the sky into a river or fount; all is water, for the rain that fell from heaven cannot be divided or separated from the water of the river. Or when a little stream enters the sea, there is no means of separating the two. Or, like the bright light entering a room through two windows; although the streams of light are separate when entering the room they become one.

as He refuses to force our will, He takes what we give Him but does not give Himself wholly until He sees that we are giving ourselves wholly to Him.