We should be comforted in a manner similar to King David, who said what he did in Psalm 139 as he considered all that you mentioned above and more (see particularly the verses that I've highlighted):
Psalm 139
1 O LORD, You have searched me and known me.
2 You know when I sit down and when I rise up;
You understand my thought from afar.
3 You ascrutinize my path and my lying down,
And are intimately acquainted with all my ways.
4 Even before there is a word on my tongue,
Behold, O LORD, You know it all.
5 You have enclosed me behind and before,
And laid Your hand upon me.
6 Such knowledge is too wonderful for me;
It is too high, I cannot attain to it.
7 Where can I go from Your Spirit?
Or where can I flee from Your presence?
8 If I ascend to heaven, You are there;
If I make my bed in Sheol, behold, You are there.
9 If I take the wings of the dawn,
If I dwell in the remotest part of the sea,
10 Even there Your hand will lead me,
And Your right hand will lay hold of me.
11 If I say, “Surely the darkness will overwhelm me,
And the light around me will be night,”
12 Even the darkness is not dark to You,
And the night is as bright as the day.
Darkness and light are alike to You.
13 For You formed my inward parts;
You wove me in my mother’s womb.
14 I will give thanks to You, for I am fearfully and wonderfully made;
Wonderful are Your works,
And my soul knows it very well.
15 My aframe was not hidden from You,
When I was made in secret,
And skillfully wrought in the depths of the earth;
16 Your eyes have seen my unformed substance;
And in Your book were all written
The days that were ordained for me,
When as yet there was not one of them.
17 How precious also are Your thoughts to me, O God!
How vast is the sum of them!
18 If I should count them, they would outnumber the sand.
When I awake, I am still with You.
19 O that You would slay the wicked, O God;
Depart from me, therefore, men of bloodshed.
20 For they speak against You wickedly,
And Your enemies btake Your name in vain.
21 Do I not hate those who hate You, O LORD?
And do I not loathe those who rise up against You?
22 I hate them with the utmost hatred;
They have become my enemies.
23 Search me, O God, and know my heart;
Try me and know my anxious thoughts;
24 And see if there be any hurtful way in me,
And lead me in the everlasting way.
Non-Christians are always disturbed by the idea of God knowing far more about every aspect of our lives than we do ourselves, of course, but it's sad to note how many there are who call themselves "Christians" who are equally troubled by this knowledge of God's immanency and intimacy
Yours in Christ,
David
