St. John of Kronstadt, On Praying Alone:

When you are praying alone, and your spirit is dejected, and you
are wearied and oppressed by your loneliness, remember then, as
always, that God the Trinity looks upon you with eyes brighter
than the sun; also all the angels, your own Guardian Angel, and
all the Saints of God. Truly they do; for they are all one in God,
and where God is, there are they also. Where the sun is, thither
also are directed all its rays. Try to understand what this means.

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Oh, what great happiness and bliss, what exaltation it is to
address oneself to the Eternal Father. Always, without fail, value
this joy which has been accorded to you by God's infinite grace
and do not forget it during your prayers; God, the angels and
God's holy men listen to you.