Paul prayed in his letter to the Ephesians (a letter to the church, and that includes us too:) for them to have "the eyes of your heart flooded with light, so that you can know and understand the hope to which He has called you," (eph 1:18 amp). We need to renew our minds to the truth of who we are because of who He is within us!
There is no reason for a Christian to EVER be depressed-but that doesnt mean we dont feel depressed sometimes. It also doesnt mean we need to feel guilty for feeling that way..it just means its time to talk to our souls!!
When my soul is tempted to be depressed, or to throw a self-pity fit, I just grab hold of it spiritually by reading Psalm 103 out loud-sometimes REALLY LOUD- and it always works!!
A Psalm of David.
1 Bless the LORD, O my soul;
And all that is within me, bless His holy name!
2 Bless the LORD, O my soul,
And forget not all His benefits:
3 Who forgives all your iniquities,
Who heals all your diseases,
4 Who redeems your life from destruction,
Who crowns you with lovingkindness and tender mercies,
5 Who satisfies your mouth with good things,
So that your youth is renewed like the eagle’s.
6 The LORD executes righteousness
And justice for all who are oppressed.
7 He made known His ways to Moses,
His acts to the children of Israel.
8 The LORD is merciful and gracious,
Slow to anger, and abounding in mercy.
9 He will not always strive with us,
Nor will He keep His anger forever.
10 He has not dealt with us according to our sins,
Nor punished us according to our iniquities.
11 For as the heavens are high above the earth,
So great is His mercy toward those who fear Him;
12 As far as the east is from the west,
So far has He removed our transgressions from us.
13 As a father pities his children,
So the LORD pities those who fear Him.
14 For He knows our frame;
He remembers that we are dust.
15 As for man, his days are like grass;
As a flower of the field, so he flourishes.
16 For the wind passes over it, and it is gone,
And its place remembers it no more.[a]
17 But the mercy of the LORD is from everlasting to everlasting
On those who fear Him,
And His righteousness to children’s children,
18 To such as keep His covenant,
And to those who remember His commandments to do them.
19 The LORD has established His throne in heaven,
And His kingdom rules over all.
20 Bless the LORD, you His angels,
Who excel in strength, who do His word,
Heeding the voice of His word.
21 Bless the LORD, all you His hosts,
You ministers of His, who do His pleasure.
22 Bless the LORD, all His works,
In all places of His dominion.
Bless the LORD, O my soul!
Some good teachings in this line:
Spirit, Soul & Body by Andrew Wommack
Victim or Victor by Keith Moore
Both of these are available for FREE download via the links above